<XBRL>
<?xml version="1.0" encoding="US-ASCII"?>
<!--XBRL Document Created with WebFilings-->
<!-- -->
<linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <roleRef roleURI="http://www.qualys.com/role/BusinessCombination" xlink:href="qlys-20120930.xsd#BusinessCombination" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/BusinessCombinationDetails" xlink:href="qlys-20120930.xsd#BusinessCombinationDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/CommitmentsAndContingencies" xlink:href="qlys-20120930.xsd#CommitmentsAndContingencies" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/CommitmentsAndContingenciesLeasesDetails" xlink:href="qlys-20120930.xsd#CommitmentsAndContingenciesLeasesDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/CommitmentsAndContingenciesLeasesTableDetails" xlink:href="qlys-20120930.xsd#CommitmentsAndContingenciesLeasesTableDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/CommitmentsAndContingenciesLineOfCreditDetails" xlink:href="qlys-20120930.xsd#CommitmentsAndContingenciesLineOfCreditDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/CommitmentsAndContingenciesSalesAndOtherTaxesDetails" xlink:href="qlys-20120930.xsd#CommitmentsAndContingenciesSalesAndOtherTaxesDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/CommitmentsAndContingenciesTables" xlink:href="qlys-20120930.xsd#CommitmentsAndContingenciesTables" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/CompanyAndSummaryOfSignificantAccountingPolicies" xlink:href="qlys-20120930.xsd#CompanyAndSummaryOfSignificantAccountingPolicies" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/CompanyAndSummaryOfSignificantAccountingPoliciesDetails" xlink:href="qlys-20120930.xsd#CompanyAndSummaryOfSignificantAccountingPoliciesDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/CompanyAndSummaryOfSignificantAccountingPoliciesPolicies" xlink:href="qlys-20120930.xsd#CompanyAndSummaryOfSignificantAccountingPoliciesPolicies" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/CondensedConsolidatedBalanceSheets" xlink:href="qlys-20120930.xsd#CondensedConsolidatedBalanceSheets" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/CondensedConsolidatedBalanceSheetsParenthetical" xlink:href="qlys-20120930.xsd#CondensedConsolidatedBalanceSheetsParenthetical" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/CondensedConsolidatedStatementsOfCashFlows" xlink:href="qlys-20120930.xsd#CondensedConsolidatedStatementsOfCashFlows" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/CondensedConsolidatedStatementsOfComprehensiveIncome" xlink:href="qlys-20120930.xsd#CondensedConsolidatedStatementsOfComprehensiveIncome" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/CondensedConsolidatedStatementsOfOperations" xlink:href="qlys-20120930.xsd#CondensedConsolidatedStatementsOfOperations" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/DocumentAndEntityInformation" xlink:href="qlys-20120930.xsd#DocumentAndEntityInformation" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/EmployeeStockAndBenefitPlans" xlink:href="qlys-20120930.xsd#EmployeeStockAndBenefitPlans" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/EmployeeStockAndBenefitPlansExpenseDetails" xlink:href="qlys-20120930.xsd#EmployeeStockAndBenefitPlansExpenseDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/EmployeeStockAndBenefitPlansFairValueAssumptionsStockOptionsDetails" xlink:href="qlys-20120930.xsd#EmployeeStockAndBenefitPlansFairValueAssumptionsStockOptionsDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/EmployeeStockAndBenefitPlansPlanInformationDetails" xlink:href="qlys-20120930.xsd#EmployeeStockAndBenefitPlansPlanInformationDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/EmployeeStockAndBenefitPlansStockOptionActivityDetails" xlink:href="qlys-20120930.xsd#EmployeeStockAndBenefitPlansStockOptionActivityDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/EmployeeStockAndBenefitPlansTables" xlink:href="qlys-20120930.xsd#EmployeeStockAndBenefitPlansTables" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/GoodwillAndIntangibleAssetsNet" xlink:href="qlys-20120930.xsd#GoodwillAndIntangibleAssetsNet" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/GoodwillAndIntangibleAssetsNetDetails" xlink:href="qlys-20120930.xsd#GoodwillAndIntangibleAssetsNetDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/GoodwillAndIntangibleAssetsNetFutureAmortizationDetails" xlink:href="qlys-20120930.xsd#GoodwillAndIntangibleAssetsNetFutureAmortizationDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/GoodwillAndIntangibleAssetsNetTables" xlink:href="qlys-20120930.xsd#GoodwillAndIntangibleAssetsNetTables" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/IncomeTaxes" xlink:href="qlys-20120930.xsd#IncomeTaxes" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/IncomeTaxesDetails" xlink:href="qlys-20120930.xsd#IncomeTaxesDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/NetIncomePerShareAttributableToCommonStockholders" xlink:href="qlys-20120930.xsd#NetIncomePerShareAttributableToCommonStockholders" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/NetIncomePerShareAttributableToCommonStockholdersDetails" xlink:href="qlys-20120930.xsd#NetIncomePerShareAttributableToCommonStockholdersDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/NetIncomePerShareAttributableToCommonStockholdersTables" xlink:href="qlys-20120930.xsd#NetIncomePerShareAttributableToCommonStockholdersTables" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/OtherIncomeExpenseNet" xlink:href="qlys-20120930.xsd#OtherIncomeExpenseNet" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/OtherIncomeExpenseNetDetails" xlink:href="qlys-20120930.xsd#OtherIncomeExpenseNetDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/OtherIncomeExpenseNetTables" xlink:href="qlys-20120930.xsd#OtherIncomeExpenseNetTables" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/PropertyAndEquipment" xlink:href="qlys-20120930.xsd#PropertyAndEquipment" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/PropertyAndEquipmentDetails" xlink:href="qlys-20120930.xsd#PropertyAndEquipmentDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/PropertyAndEquipmentTables" xlink:href="qlys-20120930.xsd#PropertyAndEquipmentTables" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/RestatementOfPreviouslyIssuedFinancialStatements" xlink:href="qlys-20120930.xsd#RestatementOfPreviouslyIssuedFinancialStatements" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/RestatementOfPreviouslyIssuedFinancialStatementsDetails" xlink:href="qlys-20120930.xsd#RestatementOfPreviouslyIssuedFinancialStatementsDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/RestatementOfPreviouslyIssuedFinancialStatementsTables" xlink:href="qlys-20120930.xsd#RestatementOfPreviouslyIssuedFinancialStatementsTables" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/SegmentInformationAndInformationAboutGeographicArea" xlink:href="qlys-20120930.xsd#SegmentInformationAndInformationAboutGeographicArea" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/SegmentInformationAndInformationAboutGeographicAreaDetails" xlink:href="qlys-20120930.xsd#SegmentInformationAndInformationAboutGeographicAreaDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/SegmentInformationAndInformationAboutGeographicAreaTables" xlink:href="qlys-20120930.xsd#SegmentInformationAndInformationAboutGeographicAreaTables" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/StockholdersEquity" xlink:href="qlys-20120930.xsd#StockholdersEquity" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/StockholdersEquityDetails" xlink:href="qlys-20120930.xsd#StockholdersEquityDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/StockholdersEquityTables" xlink:href="qlys-20120930.xsd#StockholdersEquityTables" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/SubsequentEvents" xlink:href="qlys-20120930.xsd#SubsequentEvents" xlink:type="simple" />
  <roleRef roleURI="http://www.qualys.com/role/SubsequentEventsDetails" xlink:href="qlys-20120930.xsd#SubsequentEventsDetails" xlink:type="simple" />
  <roleRef roleURI="http://www.xbrl.org/2009/role/negatedLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel" xlink:type="simple" />
  <roleRef roleURI="http://www.xbrl.org/2009/role/negatedNetLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedNetLabel" xlink:type="simple" />
  <roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodEndLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodEndLabel" xlink:type="simple" />
  <roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodStartLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodStartLabel" xlink:type="simple" />
  <roleRef roleURI="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTerseLabel" xlink:type="simple" />
  <roleRef roleURI="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel" xlink:type="simple" />
  <roleRef roleURI="http://www.xbrl.org/2009/role/netLabel" xlink:href="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd#netLabel" xlink:type="simple" />
  <presentationLink xlink:role="http://www.qualys.com/role/BusinessCombination" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="loc_us-gaap_BusinessCombinationsAbstract_5336A816CCF9277840E4D5E3F08AF020" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_BusinessCombinationDisclosureTextBlock" xlink:label="loc_us-gaap_BusinessCombinationDisclosureTextBlock_8F1634EC35099CDA2336D5E3F08C0FA9" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_5336A816CCF9277840E4D5E3F08AF020" xlink:to="loc_us-gaap_BusinessCombinationDisclosureTextBlock_8F1634EC35099CDA2336D5E3F08C0FA9" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/BusinessCombinationDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_BusinessCombinationsAbstract" xlink:label="loc_us-gaap_BusinessCombinationsAbstract_E715A60147D591DAD635DCDD9E49D69C" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_3E70F81A0068D5033E87DCDD9E492F0E" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessCombinationsAbstract_E715A60147D591DAD635DCDD9E49D69C" xlink:to="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_3E70F81A0068D5033E87DCDD9E492F0E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_075D78CDC0BD52C4D123DCDD9E49783B" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_3E70F81A0068D5033E87DCDD9E492F0E" xlink:to="loc_us-gaap_BusinessAcquisitionAxis_075D78CDC0BD52C4D123DCDD9E49783B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_CA524E04AF2C16F3FCA3DCDD9E492FC2" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_075D78CDC0BD52C4D123DCDD9E49783B" xlink:to="loc_us-gaap_BusinessAcquisitionAcquireeDomain_CA524E04AF2C16F3FCA3DCDD9E492FC2" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_NemeanNetworksLlcMember" xlink:label="loc_qlys_NemeanNetworksLlcMember_C3262FEB96B01F7A3A6FDCDD9E49B08F" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_CA524E04AF2C16F3FCA3DCDD9E492FC2" xlink:to="loc_qlys_NemeanNetworksLlcMember_C3262FEB96B01F7A3A6FDCDD9E49B08F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_6D68E4E932949F510740DCDD9E4AB5A4" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_3E70F81A0068D5033E87DCDD9E492F0E" xlink:to="loc_us-gaap_BusinessAcquisitionLineItems_6D68E4E932949F510740DCDD9E4AB5A4" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferred" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred_3BBDEA5FB09FE0B4057DDCDD9E4A3882" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_6D68E4E932949F510740DCDD9E4AB5A4" xlink:to="loc_us-gaap_BusinessCombinationConsiderationTransferred_3BBDEA5FB09FE0B4057DDCDD9E4A3882" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_BusinessAcquisitionCostOfAcquiredEntityCashPaid" xlink:label="loc_us-gaap_BusinessAcquisitionCostOfAcquiredEntityCashPaid_E2B40EEE0DF60C24A03BDCDD9E4A72A9" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_6D68E4E932949F510740DCDD9E4AB5A4" xlink:to="loc_us-gaap_BusinessAcquisitionCostOfAcquiredEntityCashPaid_E2B40EEE0DF60C24A03BDCDD9E4A72A9" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_BusinessAcquisitionCostOfAcquiredEntityEquityInterestsIssuedAndIssuableNumberOfShares" xlink:label="loc_qlys_BusinessAcquisitionCostOfAcquiredEntityEquityInterestsIssuedAndIssuableNumberOfShares_91E91E405575ADB0F029DCDD9E4A0D4C" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_6D68E4E932949F510740DCDD9E4AB5A4" xlink:to="loc_qlys_BusinessAcquisitionCostOfAcquiredEntityEquityInterestsIssuedAndIssuableNumberOfShares_91E91E405575ADB0F029DCDD9E4A0D4C" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_AmountPaidToMaintainExclusiveLicense" xlink:label="loc_qlys_AmountPaidToMaintainExclusiveLicense_1CABB68E46CE3E2137E2DCE3C0A05450" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_6D68E4E932949F510740DCDD9E4AB5A4" xlink:to="loc_qlys_AmountPaidToMaintainExclusiveLicense_1CABB68E46CE3E2137E2DCE3C0A05450" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_AmortizationPeriodOfExclusiveLicensePayment" xlink:label="loc_qlys_AmortizationPeriodOfExclusiveLicensePayment_8BBEE2E7137C2AF8D664DCE522A29A02" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_6D68E4E932949F510740DCDD9E4AB5A4" xlink:to="loc_qlys_AmortizationPeriodOfExclusiveLicensePayment_8BBEE2E7137C2AF8D664DCE522A29A02" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_NumberOfYearsForPaymentsOnPatentLicense" xlink:label="loc_qlys_NumberOfYearsForPaymentsOnPatentLicense_3BADB07F89BD2C5504EBDCDD9E4A0381" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_6D68E4E932949F510740DCDD9E4AB5A4" xlink:to="loc_qlys_NumberOfYearsForPaymentsOnPatentLicense_3BADB07F89BD2C5504EBDCDD9E4A0381" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/CommitmentsAndContingencies" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_740088DD92CEB23DD4B8D61E2D97FF4D" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_A0944057DE77CEDC96FED61F08A33B6F" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_740088DD92CEB23DD4B8D61E2D97FF4D" xlink:to="loc_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_A0944057DE77CEDC96FED61F08A33B6F" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/CommitmentsAndContingenciesLeasesDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_1F2ADCA9CB97AB9E0AF5DB8698CF3DA9" xlink:type="locator" />
    <loc xlink:href="qlys-20120930.xsd#qlys_LeasedAssetsTable" xlink:label="loc_qlys_LeasedAssetsTable_65872CDF8E1B6B6B28E2DBF4869CD029" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_1F2ADCA9CB97AB9E0AF5DB8698CF3DA9" xlink:to="loc_qlys_LeasedAssetsTable_65872CDF8E1B6B6B28E2DBF4869CD029" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis" xlink:label="loc_us-gaap_RecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_EEF4F1D289A571EFBA96DBF486A9822D" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_LeasedAssetsTable_65872CDF8E1B6B6B28E2DBF4869CD029" xlink:to="loc_us-gaap_RecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_EEF4F1D289A571EFBA96DBF486A9822D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain" xlink:label="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_FF262D028525690C0E3DDBF486A9E7BC" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RecordedUnconditionalPurchaseObligationByCategoryOfItemPurchasedAxis_EEF4F1D289A571EFBA96DBF486A9822D" xlink:to="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_FF262D028525690C0E3DDBF486A9E7BC" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_MaintenanceAndSupportMember" xlink:label="loc_qlys_MaintenanceAndSupportMember_BE4073B81F95B23EE7BCDBF486A9AEE2" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_UnconditionalPurchaseObligationCategoryOfGoodsOrServicesAcquiredDomain_FF262D028525690C0E3DDBF486A9E7BC" xlink:to="loc_qlys_MaintenanceAndSupportMember_BE4073B81F95B23EE7BCDBF486A9AEE2" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis" xlink:label="loc_us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis_87ED5759A476FC6DEE49DBF486A9C094" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_LeasedAssetsTable_65872CDF8E1B6B6B28E2DBF4869CD029" xlink:to="loc_us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis_87ED5759A476FC6DEE49DBF486A9C094" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain" xlink:label="loc_us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain_6F68D6F66F00CCB1FC9EDBF486A9909A" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentByCategoryOfItemPurchasedAxis_87ED5759A476FC6DEE49DBF486A9C094" xlink:to="loc_us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain_6F68D6F66F00CCB1FC9EDBF486A9909A" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CapitalAdditionsMember" xlink:label="loc_us-gaap_CapitalAdditionsMember_6368AC20B7E4A412FD78DBF486A9905A" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongTermPurchaseCommitmentCategoryOfItemPurchasedDomain_6F68D6F66F00CCB1FC9EDBF486A9909A" xlink:to="loc_us-gaap_CapitalAdditionsMember_6368AC20B7E4A412FD78DBF486A9905A" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_5B358DCB7354847B6065DBF486AA6B84" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_LeasedAssetsTable_65872CDF8E1B6B6B28E2DBF4869CD029" xlink:to="loc_us-gaap_LongtermDebtTypeAxis_5B358DCB7354847B6065DBF486AA6B84" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_49B2584E43749110EA3FDBF486AA917C" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_5B358DCB7354847B6065DBF486AA6B84" xlink:to="loc_us-gaap_LongtermDebtTypeDomain_49B2584E43749110EA3FDBF486AA917C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CapitalLeaseObligationsMember" xlink:label="loc_us-gaap_CapitalLeaseObligationsMember_BD2DF708FD07512D3CA5DBF486AAA135" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_49B2584E43749110EA3FDBF486AA917C" xlink:to="loc_us-gaap_CapitalLeaseObligationsMember_BD2DF708FD07512D3CA5DBF486AAA135" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis_2314BB1E2080DC3E199FDBF486AABAFD" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_LeasedAssetsTable_65872CDF8E1B6B6B28E2DBF4869CD029" xlink:to="loc_us-gaap_RangeAxis_2314BB1E2080DC3E199FDBF486AABAFD" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_C48B043DF9FE9BBFADB7DBF486AA1448" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RangeAxis_2314BB1E2080DC3E199FDBF486AABAFD" xlink:to="loc_us-gaap_RangeMember_C48B043DF9FE9BBFADB7DBF486AA1448" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_MinimumMember" xlink:label="loc_us-gaap_MinimumMember_F42E83BCD9BA5011063FDBF486AA82D7" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RangeMember_C48B043DF9FE9BBFADB7DBF486AA1448" xlink:to="loc_us-gaap_MinimumMember_F42E83BCD9BA5011063FDBF486AA82D7" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_MaximumMember" xlink:label="loc_us-gaap_MaximumMember_25B0F94B3B33D4300556DBF486AA3A84" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RangeMember_C48B043DF9FE9BBFADB7DBF486AA1448" xlink:to="loc_us-gaap_MaximumMember_25B0F94B3B33D4300556DBF486AA3A84" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_LeasedAssetsLineItems" xlink:label="loc_qlys_LeasedAssetsLineItems_D9AB4002B1DB39CE6D69DBF4DB5573EF" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_LeasedAssetsTable_65872CDF8E1B6B6B28E2DBF4869CD029" xlink:to="loc_qlys_LeasedAssetsLineItems_D9AB4002B1DB39CE6D69DBF4DB5573EF" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_19A213085265F8C2FC11DBF4DB589AA5" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_LeasedAssetsLineItems_D9AB4002B1DB39CE6D69DBF4DB5573EF" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_19A213085265F8C2FC11DBF4DB589AA5" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_F367C86C81C486CD80B0DBF4DB5898F4" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_LeasedAssetsLineItems_D9AB4002B1DB39CE6D69DBF4DB5573EF" xlink:to="loc_us-gaap_DebtInstrumentFaceAmount_F367C86C81C486CD80B0DBF4DB5898F4" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RecordedUnconditionalPurchaseObligation" xlink:label="loc_us-gaap_RecordedUnconditionalPurchaseObligation_4BCBA798F6B7D9EA9465DBF4DB588C51" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_LeasedAssetsLineItems_D9AB4002B1DB39CE6D69DBF4DB5573EF" xlink:to="loc_us-gaap_RecordedUnconditionalPurchaseObligation_4BCBA798F6B7D9EA9465DBF4DB588C51" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LeaseAndRentalExpense" xlink:label="loc_us-gaap_LeaseAndRentalExpense_013DE5A6988560D0876ADBF4DB58B923" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_LeasedAssetsLineItems_D9AB4002B1DB39CE6D69DBF4DB5573EF" xlink:to="loc_us-gaap_LeaseAndRentalExpense_013DE5A6988560D0876ADBF4DB58B923" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DeferredRentCreditNoncurrent" xlink:label="loc_us-gaap_DeferredRentCreditNoncurrent_BC73DAA130FE00521EA5DBF4DB58B1C4" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_LeasedAssetsLineItems_D9AB4002B1DB39CE6D69DBF4DB5573EF" xlink:to="loc_us-gaap_DeferredRentCreditNoncurrent_BC73DAA130FE00521EA5DBF4DB58B1C4" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/CommitmentsAndContingenciesLeasesTableDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_6BA5E617857E31854B42DB8698CA8A7F" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_0029F2EB55FC20CE82E6DB8698CA5CE6" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_6BA5E617857E31854B42DB8698CA8A7F" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_0029F2EB55FC20CE82E6DB8698CA5CE6" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_C2CCC3099E5DB692389CDB8698CAF474" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_0029F2EB55FC20CE82E6DB8698CA5CE6" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_C2CCC3099E5DB692389CDB8698CAF474" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_F5046B6741CC190BFBA4DB8698CA7218" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_0029F2EB55FC20CE82E6DB8698CA5CE6" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_F5046B6741CC190BFBA4DB8698CA7218" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_608FAA94F87FC52B4941DB8698CADEA5" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_0029F2EB55FC20CE82E6DB8698CA5CE6" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_608FAA94F87FC52B4941DB8698CADEA5" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_D025A137F68A4A4E924DDB8698CBBA97" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_0029F2EB55FC20CE82E6DB8698CA5CE6" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_D025A137F68A4A4E924DDB8698CBBA97" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_0F73230561F9491F9BCDDB8698CBE4A2" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_0029F2EB55FC20CE82E6DB8698CA5CE6" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_0F73230561F9491F9BCDDB8698CBE4A2" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_842E4289A34BF078132FDB8698CB28A9" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_0029F2EB55FC20CE82E6DB8698CA5CE6" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_842E4289A34BF078132FDB8698CB28A9" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_1E20A0729F1830F912D2DB8698CBA3BE" xlink:type="locator" />
    <presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueAbstract_0029F2EB55FC20CE82E6DB8698CA5CE6" xlink:to="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_1E20A0729F1830F912D2DB8698CBA3BE" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsDueAbstract" xlink:label="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueAbstract_951A0E89E9E818B7CE63DB8698CBB01A" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_6BA5E617857E31854B42DB8698CA8A7F" xlink:to="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueAbstract_951A0E89E9E818B7CE63DB8698CBB01A" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsDueCurrent" xlink:label="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueCurrent_5D359A47E7D3D0DB680ADB8698CB3F5B" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueAbstract_951A0E89E9E818B7CE63DB8698CBB01A" xlink:to="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueCurrent_5D359A47E7D3D0DB680ADB8698CB3F5B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears" xlink:label="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears_23BA9258B73B9AE5D9BEDB8698CB10A4" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueAbstract_951A0E89E9E818B7CE63DB8698CBB01A" xlink:to="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears_23BA9258B73B9AE5D9BEDB8698CB10A4" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears" xlink:label="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears_3C7F6361B1077B2BAC2BDB8698CBF2AB" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueAbstract_951A0E89E9E818B7CE63DB8698CBB01A" xlink:to="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears_3C7F6361B1077B2BAC2BDB8698CBF2AB" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears" xlink:label="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears_63FC9313E4FEA99142CCDB8698CBDF8D" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueAbstract_951A0E89E9E818B7CE63DB8698CBB01A" xlink:to="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears_63FC9313E4FEA99142CCDB8698CBDF8D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFiveYears" xlink:label="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFiveYears_CC251E7105790753A2FBDB8698CB8432" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueAbstract_951A0E89E9E818B7CE63DB8698CBB01A" xlink:to="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFiveYears_CC251E7105790753A2FBDB8698CB8432" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsDueThereafter" xlink:label="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueThereafter_C3069B799CCEA0448218DB8698CB2184" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueAbstract_951A0E89E9E818B7CE63DB8698CBB01A" xlink:to="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueThereafter_C3069B799CCEA0448218DB8698CB2184" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsDue" xlink:label="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDue_7493A81BD2DC7AAF56DBDB8698CBF88C" xlink:type="locator" />
    <presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueAbstract_951A0E89E9E818B7CE63DB8698CBB01A" xlink:to="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDue_7493A81BD2DC7AAF56DBDB8698CBF88C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments" xlink:label="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments_C69E38EEA840F95AC5E7DB8698CB44FE" xlink:type="locator" />
    <presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueAbstract_951A0E89E9E818B7CE63DB8698CBB01A" xlink:to="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments_C69E38EEA840F95AC5E7DB8698CB44FE" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments" xlink:label="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments_540EDAD0084643A2EF0CDB8698CBB737" xlink:type="locator" />
    <presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueAbstract_951A0E89E9E818B7CE63DB8698CBB01A" xlink:to="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsPresentValueOfNetMinimumPayments_540EDAD0084643A2EF0CDB8698CBB737" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CapitalLeaseObligationsCurrent" xlink:label="loc_us-gaap_CapitalLeaseObligationsCurrent_0EDB1332F8B0D2FC2F90DB8698CB28A3" xlink:type="locator" />
    <presentationArc order="10" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueAbstract_951A0E89E9E818B7CE63DB8698CBB01A" xlink:to="loc_us-gaap_CapitalLeaseObligationsCurrent_0EDB1332F8B0D2FC2F90DB8698CB28A3" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CapitalLeaseObligationsNoncurrent" xlink:label="loc_us-gaap_CapitalLeaseObligationsNoncurrent_A83C2D09369D2202EDDEDB8698CB2EF4" xlink:type="locator" />
    <presentationArc order="11" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueAbstract_951A0E89E9E818B7CE63DB8698CBB01A" xlink:to="loc_us-gaap_CapitalLeaseObligationsNoncurrent_A83C2D09369D2202EDDEDB8698CB2EF4" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/CommitmentsAndContingenciesLineOfCreditDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_F6803347FBD62569D96EDCDC869AD984" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LineOfCreditFacilityTable" xlink:label="loc_us-gaap_LineOfCreditFacilityTable_E4D48FF114C76F676AEFDCDC869BA811" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_F6803347FBD62569D96EDCDC869AD984" xlink:to="loc_us-gaap_LineOfCreditFacilityTable_E4D48FF114C76F676AEFDCDC869BA811" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:label="loc_us-gaap_CreditFacilityAxis_9D46BDB6F844E779D489DCDC869B17E0" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_E4D48FF114C76F676AEFDCDC869BA811" xlink:to="loc_us-gaap_CreditFacilityAxis_9D46BDB6F844E779D489DCDC869B17E0" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:label="loc_us-gaap_CreditFacilityDomain_16024216B0057CCBFC1DDCDC869BBE64" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CreditFacilityAxis_9D46BDB6F844E779D489DCDC869B17E0" xlink:to="loc_us-gaap_CreditFacilityDomain_16024216B0057CCBFC1DDCDC869BBE64" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LineOfCreditMember" xlink:label="loc_us-gaap_LineOfCreditMember_DC6379D297B3CD8CEB15DCDC869B5C87" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CreditFacilityDomain_16024216B0057CCBFC1DDCDC869BBE64" xlink:to="loc_us-gaap_LineOfCreditMember_DC6379D297B3CD8CEB15DCDC869B5C87" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LineOfCreditFacilityLineItems" xlink:label="loc_us-gaap_LineOfCreditFacilityLineItems_0DFD51B61247116D673ADCDC869B4922" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LineOfCreditFacilityTable_E4D48FF114C76F676AEFDCDC869BA811" xlink:to="loc_us-gaap_LineOfCreditFacilityLineItems_0DFD51B61247116D673ADCDC869B4922" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_97A67E620F8D9B5AAA61DCDC869BFA3D" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_0DFD51B61247116D673ADCDC869B4922" xlink:to="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_97A67E620F8D9B5AAA61DCDC869BFA3D" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_LineOfCreditNumberOfMonthlyPayments" xlink:label="loc_qlys_LineOfCreditNumberOfMonthlyPayments_73541C97ECB7B860D635DCDC869CC128" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_0DFD51B61247116D673ADCDC869B4922" xlink:to="loc_qlys_LineOfCreditNumberOfMonthlyPayments_73541C97ECB7B860D635DCDC869CC128" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_091EB3E98AD767D6D665DCDC869C3FD0" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_0DFD51B61247116D673ADCDC869B4922" xlink:to="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_091EB3E98AD767D6D665DCDC869C3FD0" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_LineOfCreditFacilityIncreaseInMaximumBorrowingCapacity" xlink:label="loc_qlys_LineOfCreditFacilityIncreaseInMaximumBorrowingCapacity_B97E4E8FD851CCA46284DCDC869CA7ED" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_0DFD51B61247116D673ADCDC869B4922" xlink:to="loc_qlys_LineOfCreditFacilityIncreaseInMaximumBorrowingCapacity_B97E4E8FD851CCA46284DCDC869CA7ED" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LineOfCreditFacilityAmountOutstanding" xlink:label="loc_us-gaap_LineOfCreditFacilityAmountOutstanding_918AE862E7412B7965EADCDC869C5F05" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_0DFD51B61247116D673ADCDC869B4922" xlink:to="loc_us-gaap_LineOfCreditFacilityAmountOutstanding_918AE862E7412B7965EADCDC869C5F05" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_09D9EEAAE47233C889FEDCDC869CFDC5" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LineOfCreditFacilityLineItems_0DFD51B61247116D673ADCDC869B4922" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_09D9EEAAE47233C889FEDCDC869CFDC5" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/CommitmentsAndContingenciesSalesAndOtherTaxesDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_EAD3669E8F0A99300D6FDB8698C6EA46" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SalesAndExciseTaxPayableCurrent" xlink:label="loc_us-gaap_SalesAndExciseTaxPayableCurrent_B37EAAB573298094B525DB8698C62CCA" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_EAD3669E8F0A99300D6FDB8698C6EA46" xlink:to="loc_us-gaap_SalesAndExciseTaxPayableCurrent_B37EAAB573298094B525DB8698C62CCA" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/CommitmentsAndContingenciesTables" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_7B96F564BDBC490520E3DCDC84835928" xlink:type="locator" />
    <loc xlink:href="qlys-20120930.xsd#qlys_ScheduleOfFutureMinimumLeasePaymentsForOperatingAndCapitalLeasesTableTextBlock" xlink:label="loc_qlys_ScheduleOfFutureMinimumLeasePaymentsForOperatingAndCapitalLeasesTableTextBlock_2BED2438F0239522C4A0DCDC848383D4" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_7B96F564BDBC490520E3DCDC84835928" xlink:to="loc_qlys_ScheduleOfFutureMinimumLeasePaymentsForOperatingAndCapitalLeasesTableTextBlock_2BED2438F0239522C4A0DCDC848383D4" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/CompanyAndSummaryOfSignificantAccountingPolicies" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_5B2E371DF5777DF58ECCE17D4A320DFD" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_BusinessDescriptionAndAccountingPoliciesTextBlock" xlink:label="loc_us-gaap_BusinessDescriptionAndAccountingPoliciesTextBlock_020266831815B88C5884E18704C48386" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_5B2E371DF5777DF58ECCE17D4A320DFD" xlink:to="loc_us-gaap_BusinessDescriptionAndAccountingPoliciesTextBlock_020266831815B88C5884E18704C48386" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/CompanyAndSummaryOfSignificantAccountingPoliciesDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_0B463502F2B89F44D327E21B203D598F" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DerivativeTable" xlink:label="loc_us-gaap_DerivativeTable_D424EB4143F8FC5E5742E21B203E36FF" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_0B463502F2B89F44D327E21B203D598F" xlink:to="loc_us-gaap_DerivativeTable_D424EB4143F8FC5E5742E21B203E36FF" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FairValueByFairValueHierarchyLevelAxis" xlink:label="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_EC5FC9BD221AA95FB767E21B203EA117" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeTable_D424EB4143F8FC5E5742E21B203E36FF" xlink:to="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_EC5FC9BD221AA95FB767E21B203EA117" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FairValueMeasurementsFairValueHierarchyDomain" xlink:label="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_F033A0821EFBDD821C22E21B203E2B34" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueByFairValueHierarchyLevelAxis_EC5FC9BD221AA95FB767E21B203EA117" xlink:to="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_F033A0821EFBDD821C22E21B203E2B34" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FairValueInputsLevel2Member" xlink:label="loc_us-gaap_FairValueInputsLevel2Member_2CAE77AE5FAB868D0CEBE21B203F0E21" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FairValueMeasurementsFairValueHierarchyDomain_F033A0821EFBDD821C22E21B203E2B34" xlink:to="loc_us-gaap_FairValueInputsLevel2Member_2CAE77AE5FAB868D0CEBE21B203F0E21" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_8A391168C91B42E3EC70E21B203F0E2B" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeTable_D424EB4143F8FC5E5742E21B203E36FF" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_8A391168C91B42E3EC70E21B203F0E2B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_4B0FDFD005A0EA2B2285E21B203F47E4" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_8A391168C91B42E3EC70E21B203F0E2B" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_4B0FDFD005A0EA2B2285E21B203F47E4" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SoftwareAndSoftwareDevelopmentCostsMember" xlink:label="loc_us-gaap_SoftwareAndSoftwareDevelopmentCostsMember_871E0F2FA16930470BDAE21B203FC4F1" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_4B0FDFD005A0EA2B2285E21B203F47E4" xlink:to="loc_us-gaap_SoftwareAndSoftwareDevelopmentCostsMember_871E0F2FA16930470BDAE21B203FC4F1" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis_9C3CCECAB68CC10F1C55E21B203F940D" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeTable_D424EB4143F8FC5E5742E21B203E36FF" xlink:to="loc_us-gaap_RangeAxis_9C3CCECAB68CC10F1C55E21B203F940D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_6A6BE6299DFC1B954AC3E21B203F99E2" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RangeAxis_9C3CCECAB68CC10F1C55E21B203F940D" xlink:to="loc_us-gaap_RangeMember_6A6BE6299DFC1B954AC3E21B203F99E2" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_MinimumMember" xlink:label="loc_us-gaap_MinimumMember_2886DA2A90C71A061A10E21B203F9C6F" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RangeMember_6A6BE6299DFC1B954AC3E21B203F99E2" xlink:to="loc_us-gaap_MinimumMember_2886DA2A90C71A061A10E21B203F9C6F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_MaximumMember" xlink:label="loc_us-gaap_MaximumMember_A33195F8595ECFA8A9AAE21B203F5F7E" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RangeMember_6A6BE6299DFC1B954AC3E21B203F99E2" xlink:to="loc_us-gaap_MaximumMember_A33195F8595ECFA8A9AAE21B203F5F7E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_DF79F96881AD7D358D44E21B203F0186" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeTable_D424EB4143F8FC5E5742E21B203E36FF" xlink:to="loc_us-gaap_StatementEquityComponentsAxis_DF79F96881AD7D358D44E21B203F0186" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_18D1F969D655CA765A3CE21B203FA2BA" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_DF79F96881AD7D358D44E21B203F0186" xlink:to="loc_us-gaap_EquityComponentDomain_18D1F969D655CA765A3CE21B203FA2BA" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PreferredStockMember" xlink:label="loc_us-gaap_PreferredStockMember_DD77E2B2237C744EE79EE21B203FB53E" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EquityComponentDomain_18D1F969D655CA765A3CE21B203FA2BA" xlink:to="loc_us-gaap_PreferredStockMember_DD77E2B2237C744EE79EE21B203FB53E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ConcentrationRiskByTypeAxis" xlink:label="loc_us-gaap_ConcentrationRiskByTypeAxis_8466B622964531B0A5A5E21B203F728B" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeTable_D424EB4143F8FC5E5742E21B203E36FF" xlink:to="loc_us-gaap_ConcentrationRiskByTypeAxis_8466B622964531B0A5A5E21B203F728B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ConcentrationRiskTypeDomain" xlink:label="loc_us-gaap_ConcentrationRiskTypeDomain_22B2D5FD9FB18FEA4D02E21B203F290C" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ConcentrationRiskByTypeAxis_8466B622964531B0A5A5E21B203F728B" xlink:to="loc_us-gaap_ConcentrationRiskTypeDomain_22B2D5FD9FB18FEA4D02E21B203F290C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CustomerConcentrationRiskMember" xlink:label="loc_us-gaap_CustomerConcentrationRiskMember_8FE8D89089BEE31443C1E21B203F5EC9" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ConcentrationRiskTypeDomain_22B2D5FD9FB18FEA4D02E21B203F290C" xlink:to="loc_us-gaap_CustomerConcentrationRiskMember_8FE8D89089BEE31443C1E21B203F5EC9" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:label="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_08E85D99DD1C13A6FAA7E21B2040875F" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeTable_D424EB4143F8FC5E5742E21B203E36FF" xlink:to="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_08E85D99DD1C13A6FAA7E21B2040875F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ConcentrationRiskBenchmarkDomain" xlink:label="loc_us-gaap_ConcentrationRiskBenchmarkDomain_9716A4AF1B2F31C4165DE21B2040F7BC" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ConcentrationRiskByBenchmarkAxis_08E85D99DD1C13A6FAA7E21B2040875F" xlink:to="loc_us-gaap_ConcentrationRiskBenchmarkDomain_9716A4AF1B2F31C4165DE21B2040F7BC" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AccountsReceivableMember" xlink:label="loc_us-gaap_AccountsReceivableMember_16E1B7D6D4726C7C050BE21B20402F5F" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ConcentrationRiskBenchmarkDomain_9716A4AF1B2F31C4165DE21B2040F7BC" xlink:to="loc_us-gaap_AccountsReceivableMember_16E1B7D6D4726C7C050BE21B20402F5F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DerivativeByNatureAxis" xlink:label="loc_us-gaap_DerivativeByNatureAxis_C49B65741FE03C397FADE21B20404EE9" xlink:type="locator" />
    <presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeTable_D424EB4143F8FC5E5742E21B203E36FF" xlink:to="loc_us-gaap_DerivativeByNatureAxis_C49B65741FE03C397FADE21B20404EE9" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DerivativeContractTypeDomain" xlink:label="loc_us-gaap_DerivativeContractTypeDomain_38E8E2469E064120FB04E21B20404DBD" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeByNatureAxis_C49B65741FE03C397FADE21B20404EE9" xlink:to="loc_us-gaap_DerivativeContractTypeDomain_38E8E2469E064120FB04E21B20404DBD" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ForwardContractsMember" xlink:label="loc_us-gaap_ForwardContractsMember_09AAEC279781C968C929E21B2040EF7F" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeContractTypeDomain_38E8E2469E064120FB04E21B20404DBD" xlink:to="loc_us-gaap_ForwardContractsMember_09AAEC279781C968C929E21B2040EF7F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_E6B117613B0FC5098489E21B2040AE53" xlink:type="locator" />
    <presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeTable_D424EB4143F8FC5E5742E21B203E36FF" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_E6B117613B0FC5098489E21B2040AE53" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_8242C39E80F1F1EE5C5AE21B2040BCD1" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_E6B117613B0FC5098489E21B2040AE53" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_8242C39E80F1F1EE5C5AE21B2040BCD1" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_ScannerAppliancesMember" xlink:label="loc_qlys_ScannerAppliancesMember_03E9F12E9CEC2AA12015E21B20402922" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_8242C39E80F1F1EE5C5AE21B2040BCD1" xlink:to="loc_qlys_ScannerAppliancesMember_03E9F12E9CEC2AA12015E21B20402922" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DerivativeLineItems" xlink:label="loc_us-gaap_DerivativeLineItems_570363590808258E5639E21B2040A726" xlink:type="locator" />
    <presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeTable_D424EB4143F8FC5E5742E21B203E36FF" xlink:to="loc_us-gaap_DerivativeLineItems_570363590808258E5639E21B2040A726" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ConversionOfStockAmountConverted1" xlink:label="loc_us-gaap_ConversionOfStockAmountConverted1_81AF6C3C0782B5F9A3AFE21B2040EF45" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeLineItems_570363590808258E5639E21B2040A726" xlink:to="loc_us-gaap_ConversionOfStockAmountConverted1_81AF6C3C0782B5F9A3AFE21B2040EF45" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_ConcentrationRiskNumberOfCustomers" xlink:label="loc_qlys_ConcentrationRiskNumberOfCustomers_2E39F09FB8505A83CE4DE21B2040BD88" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeLineItems_570363590808258E5639E21B2040A726" xlink:to="loc_qlys_ConcentrationRiskNumberOfCustomers_2E39F09FB8505A83CE4DE21B2040BD88" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ConcentrationRiskPercentage1" xlink:label="loc_us-gaap_ConcentrationRiskPercentage1_746DA6802D93EC64D6E5E21B2040FCFB" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeLineItems_570363590808258E5639E21B2040A726" xlink:to="loc_us-gaap_ConcentrationRiskPercentage1_746DA6802D93EC64D6E5E21B2040FCFB" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_Cash" xlink:label="loc_us-gaap_Cash_CC315422B72252AA506AE21B204097D9" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeLineItems_570363590808258E5639E21B2040A726" xlink:to="loc_us-gaap_Cash_CC315422B72252AA506AE21B204097D9" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DeferredOfferingCosts" xlink:label="loc_us-gaap_DeferredOfferingCosts_099EA35396FA069A1D59E21B2040F4A0" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeLineItems_570363590808258E5639E21B2040A726" xlink:to="loc_us-gaap_DeferredOfferingCosts_099EA35396FA069A1D59E21B2040F4A0" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_ED9386F31DD5EFF9E4BFE21B20410E9E" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeLineItems_570363590808258E5639E21B2040A726" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_ED9386F31DD5EFF9E4BFE21B20410E9E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_5E97ACD3C53443C3B55AE21B204127FE" xlink:type="locator" />
    <presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeLineItems_570363590808258E5639E21B2040A726" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_5E97ACD3C53443C3B55AE21B204127FE" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_6EB51A578FFEF8A61915E21B2041301B" xlink:type="locator" />
    <presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeLineItems_570363590808258E5639E21B2040A726" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_6EB51A578FFEF8A61915E21B2041301B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DerivativeNumberOfInstrumentsHeld" xlink:label="loc_us-gaap_DerivativeNumberOfInstrumentsHeld_32F7AAA37E29A8E2E59DE21B20414F21" xlink:type="locator" />
    <presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeLineItems_570363590808258E5639E21B2040A726" xlink:to="loc_us-gaap_DerivativeNumberOfInstrumentsHeld_32F7AAA37E29A8E2E59DE21B20414F21" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/invest/2012/invest-2012-01-31.xsd#invest_DerivativeNotionalAmount" xlink:label="loc_invest_DerivativeNotionalAmount_6A96E0BDC0B795BC038CE21B2041F74F" xlink:type="locator" />
    <presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeLineItems_570363590808258E5639E21B2040A726" xlink:to="loc_invest_DerivativeNotionalAmount_6A96E0BDC0B795BC038CE21B2041F74F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ForeignCurrencyContractAssetFairValueDisclosure" xlink:label="loc_us-gaap_ForeignCurrencyContractAssetFairValueDisclosure_622AA6FBDAF9120F8E08E21B20418334" xlink:type="locator" />
    <presentationArc order="11" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeLineItems_570363590808258E5639E21B2040A726" xlink:to="loc_us-gaap_ForeignCurrencyContractAssetFairValueDisclosure_622AA6FBDAF9120F8E08E21B20418334" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLoss" xlink:label="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLoss_ABD6EA3BE03149252211E21B2041D197" xlink:type="locator" />
    <presentationArc order="12" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeLineItems_570363590808258E5639E21B2040A726" xlink:to="loc_us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsLoss_ABD6EA3BE03149252211E21B2041D197" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ForeignCurrencyTransactionGainBeforeTax" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainBeforeTax_CDB84CF551DE706BF09FE21B20419F29" xlink:type="locator" />
    <presentationArc order="13" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeLineItems_570363590808258E5639E21B2040A726" xlink:to="loc_us-gaap_ForeignCurrencyTransactionGainBeforeTax_CDB84CF551DE706BF09FE21B20419F29" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AdvertisingExpense" xlink:label="loc_us-gaap_AdvertisingExpense_7BD7E2DB11E2E5995C66E21B2041410C" xlink:type="locator" />
    <presentationArc order="14" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeLineItems_570363590808258E5639E21B2040A726" xlink:to="loc_us-gaap_AdvertisingExpense_7BD7E2DB11E2E5995C66E21B2041410C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ForeignCurrencyTransactionGainLossBeforeTax" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_14BBD0B311E9896CBA12E21B2041DA3E" xlink:type="locator" />
    <presentationArc order="15" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeLineItems_570363590808258E5639E21B2040A726" xlink:to="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_14BBD0B311E9896CBA12E21B2041DA3E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StockholdersEquityReverseStockSplit" xlink:label="loc_us-gaap_StockholdersEquityReverseStockSplit_08B2BB99ECC667A9150EE21B2041DAB4" xlink:type="locator" />
    <presentationArc order="16" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeLineItems_570363590808258E5639E21B2040A726" xlink:to="loc_us-gaap_StockholdersEquityReverseStockSplit_08B2BB99ECC667A9150EE21B2041DAB4" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StockholdersEquityNoteStockSplitConversionRatio" xlink:label="loc_us-gaap_StockholdersEquityNoteStockSplitConversionRatio_562E5DE725CCE12D9BDFE21B20417366" xlink:type="locator" />
    <presentationArc order="17" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DerivativeLineItems_570363590808258E5639E21B2040A726" xlink:to="loc_us-gaap_StockholdersEquityNoteStockSplitConversionRatio_562E5DE725CCE12D9BDFE21B20417366" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/CompanyAndSummaryOfSignificantAccountingPoliciesPolicies" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_67472A4569E491211ED4DC9D52C78ACF" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:label="loc_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_1C403803FF312D243BC7DC9D52C9725A" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_67472A4569E491211ED4DC9D52C78ACF" xlink:to="loc_us-gaap_BasisOfAccountingPolicyPolicyTextBlock_1C403803FF312D243BC7DC9D52C9725A" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ConsolidationPolicyTextBlock" xlink:label="loc_us-gaap_ConsolidationPolicyTextBlock_B52C5E9DACFC941AB590DC9D52CA68BF" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_67472A4569E491211ED4DC9D52C78ACF" xlink:to="loc_us-gaap_ConsolidationPolicyTextBlock_B52C5E9DACFC941AB590DC9D52CA68BF" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_UseOfEstimates" xlink:label="loc_us-gaap_UseOfEstimates_7A00BE60EB6A7A4EA61CDC9D52CA3CAC" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_67472A4569E491211ED4DC9D52C78ACF" xlink:to="loc_us-gaap_UseOfEstimates_7A00BE60EB6A7A4EA61CDC9D52CA3CAC" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StockholdersEquityNoteRedeemablePreferredStockIssuePolicy" xlink:label="loc_us-gaap_StockholdersEquityNoteRedeemablePreferredStockIssuePolicy_AD8172A95C5ED89C50BADC9D52CA4F5A" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_67472A4569E491211ED4DC9D52C78ACF" xlink:to="loc_us-gaap_StockholdersEquityNoteRedeemablePreferredStockIssuePolicy_AD8172A95C5ED89C50BADC9D52CA4F5A" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ConcentrationRiskCreditRisk" xlink:label="loc_us-gaap_ConcentrationRiskCreditRisk_1DE27AA253C0D14C63BEDC9D52CAF6E0" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_67472A4569E491211ED4DC9D52C78ACF" xlink:to="loc_us-gaap_ConcentrationRiskCreditRisk_1DE27AA253C0D14C63BEDC9D52CAF6E0" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:label="loc_us-gaap_CashAndCashEquivalentsPolicyTextBlock_9D7970A858D7D9FE5AEDDC9D52CBFCB6" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_67472A4569E491211ED4DC9D52C78ACF" xlink:to="loc_us-gaap_CashAndCashEquivalentsPolicyTextBlock_9D7970A858D7D9FE5AEDDC9D52CBFCB6" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_TradeAndOtherAccountsReceivablePolicy" xlink:label="loc_us-gaap_TradeAndOtherAccountsReceivablePolicy_F3B4BB8F811FFA125A2FDC9D52CB3EA2" xlink:type="locator" />
    <presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_67472A4569E491211ED4DC9D52C78ACF" xlink:to="loc_us-gaap_TradeAndOtherAccountsReceivablePolicy_F3B4BB8F811FFA125A2FDC9D52CB3EA2" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy" xlink:label="loc_us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy_CDB33585949C3F69D39BDC9D52CBDB55" xlink:type="locator" />
    <presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_67472A4569E491211ED4DC9D52C78ACF" xlink:to="loc_us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy_CDB33585949C3F69D39BDC9D52CBDB55" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PropertyPlantAndEquipmentPolicyTextBlock" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_55FCCFE0BAC5ABFD5A81DC9D52CBB68F" xlink:type="locator" />
    <presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_67472A4569E491211ED4DC9D52C78ACF" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_55FCCFE0BAC5ABFD5A81DC9D52CBB68F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock" xlink:label="loc_us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_D04024C5F21A542846F5DC9D52CB8054" xlink:type="locator" />
    <presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_67472A4569E491211ED4DC9D52C78ACF" xlink:to="loc_us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_D04024C5F21A542846F5DC9D52CB8054" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_46046E3C551A7AB7DCC5DC9D52CB0128" xlink:type="locator" />
    <presentationArc order="11" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_67472A4569E491211ED4DC9D52C78ACF" xlink:to="loc_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock_46046E3C551A7AB7DCC5DC9D52CB0128" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock" xlink:label="loc_us-gaap_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock_ACBD4F0813B6CA1E1D0CDC9D52CB6D62" xlink:type="locator" />
    <presentationArc order="12" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_67472A4569E491211ED4DC9D52C78ACF" xlink:to="loc_us-gaap_ResearchDevelopmentAndComputerSoftwarePolicyTextBlock_ACBD4F0813B6CA1E1D0CDC9D52CB6D62" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DerivativesReportingOfDerivativeActivity" xlink:label="loc_us-gaap_DerivativesReportingOfDerivativeActivity_72569A43C38C3652D998DC9D52CBCC21" xlink:type="locator" />
    <presentationArc order="13" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_67472A4569E491211ED4DC9D52C78ACF" xlink:to="loc_us-gaap_DerivativesReportingOfDerivativeActivity_72569A43C38C3652D998DC9D52CBCC21" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:label="loc_us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_6ACE6D610D630BD76261DC9D52CAC812" xlink:type="locator" />
    <presentationArc order="14" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_67472A4569E491211ED4DC9D52C78ACF" xlink:to="loc_us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy_6ACE6D610D630BD76261DC9D52CAC812" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RevenueRecognitionPolicyTextBlock" xlink:label="loc_us-gaap_RevenueRecognitionPolicyTextBlock_45EBC4A03BF7446FEC48DC9D52CC3995" xlink:type="locator" />
    <presentationArc order="15" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_67472A4569E491211ED4DC9D52C78ACF" xlink:to="loc_us-gaap_RevenueRecognitionPolicyTextBlock_45EBC4A03BF7446FEC48DC9D52CC3995" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AdvertisingCostsPolicyTextBlock" xlink:label="loc_us-gaap_AdvertisingCostsPolicyTextBlock_8DE40B30FB49F9687F11DC9D52CC8427" xlink:type="locator" />
    <presentationArc order="16" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_67472A4569E491211ED4DC9D52C78ACF" xlink:to="loc_us-gaap_AdvertisingCostsPolicyTextBlock_8DE40B30FB49F9687F11DC9D52CC8427" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncomeTaxPolicyTextBlock" xlink:label="loc_us-gaap_IncomeTaxPolicyTextBlock_337D1BF5221B7D121436DC9D52CC62A3" xlink:type="locator" />
    <presentationArc order="17" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_67472A4569E491211ED4DC9D52C78ACF" xlink:to="loc_us-gaap_IncomeTaxPolicyTextBlock_337D1BF5221B7D121436DC9D52CC62A3" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ComprehensiveIncomePolicyPolicyTextBlock" xlink:label="loc_us-gaap_ComprehensiveIncomePolicyPolicyTextBlock_79A9C55FAE8DE33E7013DC9D52CCB1E3" xlink:type="locator" />
    <presentationArc order="18" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_67472A4569E491211ED4DC9D52C78ACF" xlink:to="loc_us-gaap_ComprehensiveIncomePolicyPolicyTextBlock_79A9C55FAE8DE33E7013DC9D52CCB1E3" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock" xlink:label="loc_us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_1AA1672A8FD283A2EF23DC9D52CC2B79" xlink:type="locator" />
    <presentationArc order="19" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_67472A4569E491211ED4DC9D52C78ACF" xlink:to="loc_us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock_1AA1672A8FD283A2EF23DC9D52CC2B79" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FairValueMeasurementPolicyPolicyTextBlock" xlink:label="loc_us-gaap_FairValueMeasurementPolicyPolicyTextBlock_93305ECA7FDF8EFFF705DC9D52CC3C02" xlink:type="locator" />
    <presentationArc order="20" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_67472A4569E491211ED4DC9D52C78ACF" xlink:to="loc_us-gaap_FairValueMeasurementPolicyPolicyTextBlock_93305ECA7FDF8EFFF705DC9D52CC3C02" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EarningsPerSharePolicyTextBlock" xlink:label="loc_us-gaap_EarningsPerSharePolicyTextBlock_FF215A1CE6B66DEA85B0DC9D52CCA2D6" xlink:type="locator" />
    <presentationArc order="21" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_67472A4569E491211ED4DC9D52C78ACF" xlink:to="loc_us-gaap_EarningsPerSharePolicyTextBlock_FF215A1CE6B66DEA85B0DC9D52CCA2D6" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:label="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_13DAF431E20E6CCE68B2DC9D52CC32BA" xlink:type="locator" />
    <presentationArc order="22" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_67472A4569E491211ED4DC9D52C78ACF" xlink:to="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_13DAF431E20E6CCE68B2DC9D52CC32BA" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/CondensedConsolidatedBalanceSheets" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="loc_us-gaap_StatementOfFinancialPositionAbstract_A6775BC7784BCE12335EE655A2780B01" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_CBE3B6EDA6860237988DE655A278C1A4" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_A6775BC7784BCE12335EE655A2780B01" xlink:to="loc_us-gaap_StatementTable_CBE3B6EDA6860237988DE655A278C1A4" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis_5D27F3C5C9F98AB7ECB1E655A27857E5" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_CBE3B6EDA6860237988DE655A278C1A4" xlink:to="loc_us-gaap_StatementScenarioAxis_5D27F3C5C9F98AB7ECB1E655A27857E5" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_C3833CB6F7363111F778E655A279A049" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementScenarioAxis_5D27F3C5C9F98AB7ECB1E655A27857E5" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain_C3833CB6F7363111F778E655A279A049" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_DCE23A66851E8DFCC4DFE655A279F0B7" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_CBE3B6EDA6860237988DE655A278C1A4" xlink:to="loc_us-gaap_StatementClassOfStockAxis_DCE23A66851E8DFCC4DFE655A279F0B7" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_68769A2AD23A98A5528BE655A279A94C" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementClassOfStockAxis_DCE23A66851E8DFCC4DFE655A279F0B7" xlink:to="loc_us-gaap_ClassOfStockDomain_68769A2AD23A98A5528BE655A279A94C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SeriesAPreferredStockMember" xlink:label="loc_us-gaap_SeriesAPreferredStockMember_C9887C0167346ECE38CFE655A2791655" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_68769A2AD23A98A5528BE655A279A94C" xlink:to="loc_us-gaap_SeriesAPreferredStockMember_C9887C0167346ECE38CFE655A2791655" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SeriesBPreferredStockMember" xlink:label="loc_us-gaap_SeriesBPreferredStockMember_802331DF5C75258D7385E655A279011F" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_68769A2AD23A98A5528BE655A279A94C" xlink:to="loc_us-gaap_SeriesBPreferredStockMember_802331DF5C75258D7385E655A279011F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SeriesCPreferredStockMember" xlink:label="loc_us-gaap_SeriesCPreferredStockMember_DE37A3B747A9C05FBEAAE655A279C59D" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_68769A2AD23A98A5528BE655A279A94C" xlink:to="loc_us-gaap_SeriesCPreferredStockMember_DE37A3B747A9C05FBEAAE655A279C59D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_A0F0D69D6229BDE1B190E655A2794683" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_CBE3B6EDA6860237988DE655A278C1A4" xlink:to="loc_us-gaap_StatementLineItems_A0F0D69D6229BDE1B190E655A2794683" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="loc_us-gaap_AssetsAbstract_FBD6EB1C7467D4909EE0E655A27947F8" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_A0F0D69D6229BDE1B190E655A2794683" xlink:to="loc_us-gaap_AssetsAbstract_FBD6EB1C7467D4909EE0E655A27947F8" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AssetsCurrentAbstract" xlink:label="loc_us-gaap_AssetsCurrentAbstract_F385CF54331C8FB1BC77E655A279689C" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_FBD6EB1C7467D4909EE0E655A27947F8" xlink:to="loc_us-gaap_AssetsCurrentAbstract_F385CF54331C8FB1BC77E655A279689C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_Cash" xlink:label="loc_us-gaap_Cash_264828A033BE55B78543E655A279388A" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_F385CF54331C8FB1BC77E655A279689C" xlink:to="loc_us-gaap_Cash_264828A033BE55B78543E655A279388A" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AccountsReceivableNetCurrent" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_4707DBCE3B1FC48AF7DEE655A2798CF4" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_F385CF54331C8FB1BC77E655A279689C" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_4707DBCE3B1FC48AF7DEE655A2798CF4" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_289B8FAF0DC3EEEAEE2BE655A27A42C6" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_F385CF54331C8FB1BC77E655A279689C" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_289B8FAF0DC3EEEAEE2BE655A27A42C6" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AssetsCurrent" xlink:label="loc_us-gaap_AssetsCurrent_823EA8A1440BFB8DC54FE655A27A8684" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsCurrentAbstract_F385CF54331C8FB1BC77E655A279689C" xlink:to="loc_us-gaap_AssetsCurrent_823EA8A1440BFB8DC54FE655A27A8684" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalentsNoncurrent" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalentsNoncurrent_83512E93117B1B53B922E655A27AFE7E" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_FBD6EB1C7467D4909EE0E655A27947F8" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalentsNoncurrent_83512E93117B1B53B922E655A27AFE7E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_52550EFF98C304F6E47CE655A27AA1A3" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_FBD6EB1C7467D4909EE0E655A27947F8" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_52550EFF98C304F6E47CE655A27AA1A3" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_A67A09AF1010E84418D8E655A27AF310" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_FBD6EB1C7467D4909EE0E655A27947F8" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_A67A09AF1010E84418D8E655A27AF310" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_A7812255CF80C4ACD941E655A27AD43A" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_FBD6EB1C7467D4909EE0E655A27947F8" xlink:to="loc_us-gaap_Goodwill_A7812255CF80C4ACD941E655A27AD43A" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_1395282061812681941EE655A27AFCCB" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_FBD6EB1C7467D4909EE0E655A27947F8" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_1395282061812681941EE655A27AFCCB" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_8A296B83E7A9A973DDEAE655A27A25BB" xlink:type="locator" />
    <presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AssetsAbstract_FBD6EB1C7467D4909EE0E655A27947F8" xlink:to="loc_us-gaap_Assets_8A296B83E7A9A973DDEAE655A27A25BB" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_7B3D3328D631F646EEACE655A27A1C11" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_A0F0D69D6229BDE1B190E655A2794683" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_7B3D3328D631F646EEACE655A27A1C11" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="loc_us-gaap_LiabilitiesCurrentAbstract_0EE546E19CFBCA7B62B6E6620A1511AF" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_7B3D3328D631F646EEACE655A27A1C11" xlink:to="loc_us-gaap_LiabilitiesCurrentAbstract_0EE546E19CFBCA7B62B6E6620A1511AF" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AccountsPayableCurrent" xlink:label="loc_us-gaap_AccountsPayableCurrent_F2256002270971EC2E69E661C0A0DE5D" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_0EE546E19CFBCA7B62B6E6620A1511AF" xlink:to="loc_us-gaap_AccountsPayableCurrent_F2256002270971EC2E69E661C0A0DE5D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AccruedLiabilitiesCurrent" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_A946A60539C35F702D07E661C0A1BD63" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_0EE546E19CFBCA7B62B6E6620A1511AF" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_A946A60539C35F702D07E661C0A1BD63" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DeferredRevenueCurrent" xlink:label="loc_us-gaap_DeferredRevenueCurrent_D4A1ED5731ECF20F1F71E661C0A1753C" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_0EE546E19CFBCA7B62B6E6620A1511AF" xlink:to="loc_us-gaap_DeferredRevenueCurrent_D4A1ED5731ECF20F1F71E661C0A1753C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CapitalLeaseObligationsCurrent" xlink:label="loc_us-gaap_CapitalLeaseObligationsCurrent_D2E4B3F46DFBA00F7D49E661C0A1A43F" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_0EE546E19CFBCA7B62B6E6620A1511AF" xlink:to="loc_us-gaap_CapitalLeaseObligationsCurrent_D2E4B3F46DFBA00F7D49E661C0A1A43F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LiabilitiesCurrent" xlink:label="loc_us-gaap_LiabilitiesCurrent_52AD6628374ACD6B8DAEE661C0A2ABAC" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesCurrentAbstract_0EE546E19CFBCA7B62B6E6620A1511AF" xlink:to="loc_us-gaap_LiabilitiesCurrent_52AD6628374ACD6B8DAEE661C0A2ABAC" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DeferredRevenueNoncurrent" xlink:label="loc_us-gaap_DeferredRevenueNoncurrent_7E88CAF2AC4BA1793DC2E661C0A2B05D" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_7B3D3328D631F646EEACE655A27A1C11" xlink:to="loc_us-gaap_DeferredRevenueNoncurrent_7E88CAF2AC4BA1793DC2E661C0A2B05D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AccruedIncomeTaxesNoncurrent" xlink:label="loc_us-gaap_AccruedIncomeTaxesNoncurrent_DC1A07D086C1B3989595E661C0A32B3F" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_7B3D3328D631F646EEACE655A27A1C11" xlink:to="loc_us-gaap_AccruedIncomeTaxesNoncurrent_DC1A07D086C1B3989595E661C0A32B3F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_D43EC627A0AD6C12A2F0E661C0A3EADE" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_7B3D3328D631F646EEACE655A27A1C11" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_D43EC627A0AD6C12A2F0E661C0A3EADE" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CapitalLeaseObligationsNoncurrent" xlink:label="loc_us-gaap_CapitalLeaseObligationsNoncurrent_AB326CE5353A5B6F4A6DE661C0A46765" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_7B3D3328D631F646EEACE655A27A1C11" xlink:to="loc_us-gaap_CapitalLeaseObligationsNoncurrent_AB326CE5353A5B6F4A6DE661C0A46765" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaap_Liabilities_4DCE4357D68C6558A0BCE661C0A4DB5D" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_7B3D3328D631F646EEACE655A27A1C11" xlink:to="loc_us-gaap_Liabilities_4DCE4357D68C6558A0BCE661C0A4DB5D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="loc_us-gaap_CommitmentsAndContingencies_92F8779AC5E1B09814ADE655A27C0ECC" xlink:type="locator" />
    <presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_7B3D3328D631F646EEACE655A27A1C11" xlink:to="loc_us-gaap_CommitmentsAndContingencies_92F8779AC5E1B09814ADE655A27C0ECC" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_ConvertiblePreferredStockAbstract" xlink:label="loc_qlys_ConvertiblePreferredStockAbstract_21119DBF7E4B9B842DEDE665279284FB" xlink:type="locator" />
    <presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_7B3D3328D631F646EEACE655A27A1C11" xlink:to="loc_qlys_ConvertiblePreferredStockAbstract_21119DBF7E4B9B842DEDE665279284FB" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="loc_us-gaap_PreferredStockValue_0DD8C6CD777DEC5C1F4CE655A27C3298" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_ConvertiblePreferredStockAbstract_21119DBF7E4B9B842DEDE665279284FB" xlink:to="loc_us-gaap_PreferredStockValue_0DD8C6CD777DEC5C1F4CE655A27C3298" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StockholdersEquityAbstract" xlink:label="loc_us-gaap_StockholdersEquityAbstract_06AB799F2DCF0E6C2F3EE655A27C6FB7" xlink:type="locator" />
    <presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_7B3D3328D631F646EEACE655A27A1C11" xlink:to="loc_us-gaap_StockholdersEquityAbstract_06AB799F2DCF0E6C2F3EE655A27C6FB7" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaap_CommonStockValue_9267A9586571EDF9DA5AE655A27CCD89" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityAbstract_06AB799F2DCF0E6C2F3EE655A27C6FB7" xlink:to="loc_us-gaap_CommonStockValue_9267A9586571EDF9DA5AE655A27CCD89" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="loc_us-gaap_AdditionalPaidInCapital_5118CD42178E471D0888E655A27C6ABC" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityAbstract_06AB799F2DCF0E6C2F3EE655A27C6FB7" xlink:to="loc_us-gaap_AdditionalPaidInCapital_5118CD42178E471D0888E655A27C6ABC" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_68F4F53A1793DC305EBEE655A27C0869" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityAbstract_06AB799F2DCF0E6C2F3EE655A27C6FB7" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_68F4F53A1793DC305EBEE655A27C0869" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_3ADE678FC0DCC78D7A59E655A27C0E21" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityAbstract_06AB799F2DCF0E6C2F3EE655A27C6FB7" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_3ADE678FC0DCC78D7A59E655A27C0E21" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_73EB347F52D0CFC3AA93E655A27CBF23" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityAbstract_06AB799F2DCF0E6C2F3EE655A27C6FB7" xlink:to="loc_us-gaap_StockholdersEquity_73EB347F52D0CFC3AA93E655A27CBF23" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_796BBFDDE1ACE62968E3E655A27CD101" xlink:type="locator" />
    <presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_7B3D3328D631F646EEACE655A27A1C11" xlink:to="loc_us-gaap_LiabilitiesAndStockholdersEquity_796BBFDDE1ACE62968E3E655A27CD101" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/CondensedConsolidatedBalanceSheetsParenthetical" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="loc_us-gaap_StatementOfFinancialPositionAbstract_C98E5BECD63620EE2E30E16DA8D8ECAE" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_38EC7D9D659F10CAF492E16DA8D83101" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_C98E5BECD63620EE2E30E16DA8D8ECAE" xlink:to="loc_us-gaap_StatementTable_38EC7D9D659F10CAF492E16DA8D83101" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_3BFCFF2FB59B2693C051E16DA8D8E8CA" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_38EC7D9D659F10CAF492E16DA8D83101" xlink:to="loc_us-gaap_StatementClassOfStockAxis_3BFCFF2FB59B2693C051E16DA8D8E8CA" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_0583876DDF17E9EC6E11E16DA8D8E8BE" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementClassOfStockAxis_3BFCFF2FB59B2693C051E16DA8D8E8CA" xlink:to="loc_us-gaap_ClassOfStockDomain_0583876DDF17E9EC6E11E16DA8D8E8BE" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SeriesAPreferredStockMember" xlink:label="loc_us-gaap_SeriesAPreferredStockMember_57B4317107EE5D08FA96E16DA8D84DFC" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_0583876DDF17E9EC6E11E16DA8D8E8BE" xlink:to="loc_us-gaap_SeriesAPreferredStockMember_57B4317107EE5D08FA96E16DA8D84DFC" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SeriesBPreferredStockMember" xlink:label="loc_us-gaap_SeriesBPreferredStockMember_2B2DBF5DB6C506907B36E16DA8D87F54" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_0583876DDF17E9EC6E11E16DA8D8E8BE" xlink:to="loc_us-gaap_SeriesBPreferredStockMember_2B2DBF5DB6C506907B36E16DA8D87F54" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SeriesCPreferredStockMember" xlink:label="loc_us-gaap_SeriesCPreferredStockMember_141FE79CB2B6CDE0F7CBE16DA8D8286D" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_0583876DDF17E9EC6E11E16DA8D8E8BE" xlink:to="loc_us-gaap_SeriesCPreferredStockMember_141FE79CB2B6CDE0F7CBE16DA8D8286D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_DAA41A427812E07A5560E16DA8D98CCF" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_38EC7D9D659F10CAF492E16DA8D83101" xlink:to="loc_us-gaap_StatementLineItems_DAA41A427812E07A5560E16DA8D98CCF" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivable" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivable_811C4E4ACBC8310B76EEE16DA8D90B3A" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_DAA41A427812E07A5560E16DA8D98CCF" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivable_811C4E4ACBC8310B76EEE16DA8D90B3A" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PreferredStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_PreferredStockParOrStatedValuePerShare_E0261792357C7ED84C22E16DA8D98F53" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_DAA41A427812E07A5560E16DA8D98CCF" xlink:to="loc_us-gaap_PreferredStockParOrStatedValuePerShare_E0261792357C7ED84C22E16DA8D98F53" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PreferredStockSharesAuthorized" xlink:label="loc_us-gaap_PreferredStockSharesAuthorized_848731BD654A1270148AE16DA8D95095" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_DAA41A427812E07A5560E16DA8D98CCF" xlink:to="loc_us-gaap_PreferredStockSharesAuthorized_848731BD654A1270148AE16DA8D95095" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PreferredStockSharesIssued" xlink:label="loc_us-gaap_PreferredStockSharesIssued_87577B04FD99436A5D56E16DA8D977F2" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_DAA41A427812E07A5560E16DA8D98CCF" xlink:to="loc_us-gaap_PreferredStockSharesIssued_87577B04FD99436A5D56E16DA8D977F2" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PreferredStockSharesOutstanding" xlink:label="loc_us-gaap_PreferredStockSharesOutstanding_CE5E8A06E47CFE237041E16DA8D9B102" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_DAA41A427812E07A5560E16DA8D98CCF" xlink:to="loc_us-gaap_PreferredStockSharesOutstanding_CE5E8A06E47CFE237041E16DA8D9B102" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PreferredStockLiquidationPreferenceValue" xlink:label="loc_us-gaap_PreferredStockLiquidationPreferenceValue_59A5173A55FE3E937F38E16DA8D93AA4" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_DAA41A427812E07A5560E16DA8D98CCF" xlink:to="loc_us-gaap_PreferredStockLiquidationPreferenceValue_59A5173A55FE3E937F38E16DA8D93AA4" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_E56256D7C6B80EC35112E16DA8D9A6DF" xlink:type="locator" />
    <presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_DAA41A427812E07A5560E16DA8D98CCF" xlink:to="loc_us-gaap_CommonStockParOrStatedValuePerShare_E56256D7C6B80EC35112E16DA8D9A6DF" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_ED26436522B6676D27BEE16DA8D90814" xlink:type="locator" />
    <presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_DAA41A427812E07A5560E16DA8D98CCF" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_ED26436522B6676D27BEE16DA8D90814" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="loc_us-gaap_CommonStockSharesIssued_553F85FF3BD4335AE53DE16DA8D969E1" xlink:type="locator" />
    <presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_DAA41A427812E07A5560E16DA8D98CCF" xlink:to="loc_us-gaap_CommonStockSharesIssued_553F85FF3BD4335AE53DE16DA8D969E1" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_FDF87E192FBCD5F93C16E16DA8D9310D" xlink:type="locator" />
    <presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_DAA41A427812E07A5560E16DA8D98CCF" xlink:to="loc_us-gaap_CommonStockSharesOutstanding_FDF87E192FBCD5F93C16E16DA8D9310D" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/CondensedConsolidatedStatementsOfCashFlows" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="loc_us-gaap_StatementOfCashFlowsAbstract_666B88C7D0D6196B2F81E15330D63C30" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_52D2AF825173A0FFE59BE15330D7EC48" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_666B88C7D0D6196B2F81E15330D63C30" xlink:to="loc_us-gaap_StatementTable_52D2AF825173A0FFE59BE15330D7EC48" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis_5F633E3A08ADC609E6CCE15330D779F7" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_52D2AF825173A0FFE59BE15330D7EC48" xlink:to="loc_us-gaap_StatementScenarioAxis_5F633E3A08ADC609E6CCE15330D779F7" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_0B0922A49F522FA0177BE15330D777F1" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementScenarioAxis_5F633E3A08ADC609E6CCE15330D779F7" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain_0B0922A49F522FA0177BE15330D777F1" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_F1B93F0A346E77C7E0D5E15330D7B48F" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_52D2AF825173A0FFE59BE15330D7EC48" xlink:to="loc_us-gaap_StatementLineItems_F1B93F0A346E77C7E0D5E15330D7B48F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_8360FE04FD4056113DFFE15330D7FF26" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_F1B93F0A346E77C7E0D5E15330D7B48F" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_8360FE04FD4056113DFFE15330D7FF26" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_8C627FD6600F9364E4E4E15330D724F3" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_8360FE04FD4056113DFFE15330D7FF26" xlink:to="loc_us-gaap_NetIncomeLoss_8C627FD6600F9364E4E4E15330D724F3" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_7B878BD63C0627357BA2E15330D7EE79" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_F1B93F0A346E77C7E0D5E15330D7B48F" xlink:to="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_7B878BD63C0627357BA2E15330D7EE79" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_EC6CE23F952F05BE9CDCE15330D7A76C" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_7B878BD63C0627357BA2E15330D7EE79" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_EC6CE23F952F05BE9CDCE15330D7A76C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ProvisionForDoubtfulAccounts" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_F2FFF396A282B376ECBCE15330D7166F" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_7B878BD63C0627357BA2E15330D7EE79" xlink:to="loc_us-gaap_ProvisionForDoubtfulAccounts_F2FFF396A282B376ECBCE15330D7166F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GainLossOnSaleOfPropertyPlantEquipment" xlink:label="loc_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_8874CA16A467EDBEC865E15330D7D59B" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_7B878BD63C0627357BA2E15330D7EE79" xlink:to="loc_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_8874CA16A467EDBEC865E15330D7D59B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensation" xlink:label="loc_us-gaap_ShareBasedCompensation_BABA12C13706C04B2992E15330D7E0AD" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_7B878BD63C0627357BA2E15330D7EE79" xlink:to="loc_us-gaap_ShareBasedCompensation_BABA12C13706C04B2992E15330D7E0AD" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherNoncashExpense" xlink:label="loc_us-gaap_OtherNoncashExpense_B2EAB87CDEB6E3517BAAE15330D7FD4C" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_7B878BD63C0627357BA2E15330D7EE79" xlink:to="loc_us-gaap_OtherNoncashExpense_B2EAB87CDEB6E3517BAAE15330D7FD4C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_556BCD17A6D8840C404EE15330D8CFC1" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_7B878BD63C0627357BA2E15330D7EE79" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_556BCD17A6D8840C404EE15330D8CFC1" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_C86B4F3E371B5106E756E15330D8E33B" xlink:type="locator" />
    <presentationArc order="7" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_7B878BD63C0627357BA2E15330D7EE79" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_C86B4F3E371B5106E756E15330D8E33B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_14EE2A19A57C0643A94FE15330D860C8" xlink:type="locator" />
    <presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_7B878BD63C0627357BA2E15330D7EE79" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayable_14EE2A19A57C0643A94FE15330D860C8" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_7E5376D97B4B29B3DC88E15330D86D2B" xlink:type="locator" />
    <presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_7B878BD63C0627357BA2E15330D7EE79" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_7E5376D97B4B29B3DC88E15330D86D2B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncreaseDecreaseInDeferredRevenue" xlink:label="loc_us-gaap_IncreaseDecreaseInDeferredRevenue_D1D901768E9A456CF9A4E15330D8980A" xlink:type="locator" />
    <presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_7B878BD63C0627357BA2E15330D7EE79" xlink:to="loc_us-gaap_IncreaseDecreaseInDeferredRevenue_D1D901768E9A456CF9A4E15330D8980A" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_82F1786EC66A66F9CC3DE15330D88031" xlink:type="locator" />
    <presentationArc order="11" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_7B878BD63C0627357BA2E15330D7EE79" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_82F1786EC66A66F9CC3DE15330D88031" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities_9B18DFAA3D698A1E67DBE15330D82595" xlink:type="locator" />
    <presentationArc order="12" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_7B878BD63C0627357BA2E15330D7EE79" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities_9B18DFAA3D698A1E67DBE15330D82595" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_8E7B6D711A6A887F5248E15330D813AA" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_F1B93F0A346E77C7E0D5E15330D7B48F" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_8E7B6D711A6A887F5248E15330D813AA" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_949E92DF45465AE4CE16E15330D893AB" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_F1B93F0A346E77C7E0D5E15330D7B48F" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_949E92DF45465AE4CE16E15330D893AB" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_3B40FE37A5C550A54725E15330D88D3D" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_949E92DF45465AE4CE16E15330D893AB" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_3B40FE37A5C550A54725E15330D88D3D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_8530F47A196BD83F5650E15330D8C079" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_F1B93F0A346E77C7E0D5E15330D7B48F" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_8530F47A196BD83F5650E15330D8C079" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_A6DCF5464844F951EF84E15330D8E467" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_F1B93F0A346E77C7E0D5E15330D7B48F" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_A6DCF5464844F951EF84E15330D8E467" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RepaymentsOfLongTermCapitalLeaseObligations" xlink:label="loc_us-gaap_RepaymentsOfLongTermCapitalLeaseObligations_BC3DF524CA5556AC5A91E15330D88461" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_A6DCF5464844F951EF84E15330D8E467" xlink:to="loc_us-gaap_RepaymentsOfLongTermCapitalLeaseObligations_BC3DF524CA5556AC5A91E15330D88461" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired" xlink:label="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_7255D0D921B99C1E48E3E15330D879FB" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_A6DCF5464844F951EF84E15330D8E467" xlink:to="loc_us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired_7255D0D921B99C1E48E3E15330D879FB" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ProceedsFromStockOptionsExercised" xlink:label="loc_us-gaap_ProceedsFromStockOptionsExercised_19A7DD22D316E4A082F3E15330D8CFFD" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_A6DCF5464844F951EF84E15330D8E467" xlink:to="loc_us-gaap_ProceedsFromStockOptionsExercised_19A7DD22D316E4A082F3E15330D8CFFD" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PaymentsOfStockIssuanceCosts" xlink:label="loc_us-gaap_PaymentsOfStockIssuanceCosts_F4C6ED362B2562E03790E15330D8468E" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_A6DCF5464844F951EF84E15330D8E467" xlink:to="loc_us-gaap_PaymentsOfStockIssuanceCosts_F4C6ED362B2562E03790E15330D8468E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_FB31D8A5FD4A67AD8A19E15330D86995" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_A6DCF5464844F951EF84E15330D8E467" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_FB31D8A5FD4A67AD8A19E15330D86995" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_2DD98854A0335AF425BCE15330D94C7C" xlink:type="locator" />
    <presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_F1B93F0A346E77C7E0D5E15330D7B48F" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_2DD98854A0335AF425BCE15330D94C7C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_382A00203EB2194A0D1AE15330D94706" xlink:type="locator" />
    <presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_F1B93F0A346E77C7E0D5E15330D7B48F" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_382A00203EB2194A0D1AE15330D94706" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_013756D5854F1CCB985EE15330D91BE3" xlink:type="locator" />
    <presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_F1B93F0A346E77C7E0D5E15330D7B48F" xlink:to="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_013756D5854F1CCB985EE15330D91BE3" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_Cash" xlink:label="loc_us-gaap_Cash_64A2777932BD1F651555E15330D96097" xlink:type="locator" />
    <presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_F1B93F0A346E77C7E0D5E15330D7B48F" xlink:to="loc_us-gaap_Cash_64A2777932BD1F651555E15330D96097" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_Cash" xlink:label="loc_us-gaap_Cash_03B61B2045FE1932EB7DE15330D972BB" xlink:type="locator" />
    <presentationArc order="11" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_F1B93F0A346E77C7E0D5E15330D7B48F" xlink:to="loc_us-gaap_Cash_03B61B2045FE1932EB7DE15330D972BB" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SupplementalCashFlowInformationAbstract" xlink:label="loc_us-gaap_SupplementalCashFlowInformationAbstract_404B1E4C46E44319AF02E15330D9D436" xlink:type="locator" />
    <presentationArc order="12" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_F1B93F0A346E77C7E0D5E15330D7B48F" xlink:to="loc_us-gaap_SupplementalCashFlowInformationAbstract_404B1E4C46E44319AF02E15330D9D436" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_DeferredOfferingsCostsIncurredButNotYetPaid" xlink:label="loc_qlys_DeferredOfferingsCostsIncurredButNotYetPaid_BDB31E6CC38B6BE7B8F6E15330D97C52" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SupplementalCashFlowInformationAbstract_404B1E4C46E44319AF02E15330D9D436" xlink:to="loc_qlys_DeferredOfferingsCostsIncurredButNotYetPaid_BDB31E6CC38B6BE7B8F6E15330D97C52" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StockIssued1" xlink:label="loc_us-gaap_StockIssued1_93B2015508554C743029E15330D9B72D" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SupplementalCashFlowInformationAbstract_404B1E4C46E44319AF02E15330D9D436" xlink:to="loc_us-gaap_StockIssued1_93B2015508554C743029E15330D9B72D" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/CondensedConsolidatedStatementsOfComprehensiveIncome" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract" xlink:label="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_9FE192BCE433C3F82074E0F6128B8D38" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_74F14EA586FBCFBCADB1E0F6128EEC98" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_9FE192BCE433C3F82074E0F6128B8D38" xlink:to="loc_us-gaap_StatementTable_74F14EA586FBCFBCADB1E0F6128EEC98" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis_DCBB39A82005611F828CE0F6128E5695" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_74F14EA586FBCFBCADB1E0F6128EEC98" xlink:to="loc_us-gaap_StatementScenarioAxis_DCBB39A82005611F828CE0F6128E5695" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_374FECCF57B49C8FF9CAE0F6128E9CC2" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementScenarioAxis_DCBB39A82005611F828CE0F6128E5695" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain_374FECCF57B49C8FF9CAE0F6128E9CC2" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_0E752DF2C98CF38A3E13E0F6128E304E" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_74F14EA586FBCFBCADB1E0F6128EEC98" xlink:to="loc_us-gaap_StatementLineItems_0E752DF2C98CF38A3E13E0F6128E304E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_F8E968C60F3B600F9954E0F6128E7B0B" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_0E752DF2C98CF38A3E13E0F6128E304E" xlink:to="loc_us-gaap_NetIncomeLoss_F8E968C60F3B600F9954E0F6128E7B0B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax" xlink:label="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax_0757FA973AE1FF3FFD18E0F6128F64FD" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_0E752DF2C98CF38A3E13E0F6128E304E" xlink:to="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax_0757FA973AE1FF3FFD18E0F6128F64FD" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_11008D0BBAA8A59346DCE0F6128F979C" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_0E752DF2C98CF38A3E13E0F6128E304E" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_11008D0BBAA8A59346DCE0F6128F979C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_FF38961811220B44BC30E0F6128FBC17" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_0E752DF2C98CF38A3E13E0F6128E304E" xlink:to="loc_us-gaap_ComprehensiveIncomeNetOfTax_FF38961811220B44BC30E0F6128FBC17" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/CondensedConsolidatedStatementsOfOperations" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="loc_us-gaap_IncomeStatementAbstract_7EDEAEADD1929BFD94A5E17D4A6428A1" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_185BF0E616D1B70B9513E17D4A641FF0" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeStatementAbstract_7EDEAEADD1929BFD94A5E17D4A6428A1" xlink:to="loc_us-gaap_StatementTable_185BF0E616D1B70B9513E17D4A641FF0" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis_4940CC0307CC695EC874E17D4A64F22B" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_185BF0E616D1B70B9513E17D4A641FF0" xlink:to="loc_us-gaap_StatementScenarioAxis_4940CC0307CC695EC874E17D4A64F22B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_EAFDFAA46D6677E496DDE17D4A6468B3" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementScenarioAxis_4940CC0307CC695EC874E17D4A64F22B" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain_EAFDFAA46D6677E496DDE17D4A6468B3" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_552BE12728C1DFB814C2E17D4A6419C6" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementTable_185BF0E616D1B70B9513E17D4A641FF0" xlink:to="loc_us-gaap_StatementLineItems_552BE12728C1DFB814C2E17D4A6419C6" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RevenuesAbstract" xlink:label="loc_us-gaap_RevenuesAbstract_156F805C008A2FFA3CC3E17D4A64CFDF" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_552BE12728C1DFB814C2E17D4A6419C6" xlink:to="loc_us-gaap_RevenuesAbstract_156F805C008A2FFA3CC3E17D4A64CFDF" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_D910F0D9557945DF12FAE17D4A64C606" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenuesAbstract_156F805C008A2FFA3CC3E17D4A64CFDF" xlink:to="loc_us-gaap_Revenues_D910F0D9557945DF12FAE17D4A64C606" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CostOfRevenue" xlink:label="loc_us-gaap_CostOfRevenue_24491D25C50D987B99CEE17D4A645E18" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenuesAbstract_156F805C008A2FFA3CC3E17D4A64CFDF" xlink:to="loc_us-gaap_CostOfRevenue_24491D25C50D987B99CEE17D4A645E18" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GrossProfit" xlink:label="loc_us-gaap_GrossProfit_FB6D121EE9C38F7D0A50E17D4A643D2F" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RevenuesAbstract_156F805C008A2FFA3CC3E17D4A64CFDF" xlink:to="loc_us-gaap_GrossProfit_FB6D121EE9C38F7D0A50E17D4A643D2F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OperatingExpensesAbstract" xlink:label="loc_us-gaap_OperatingExpensesAbstract_A7E3305A86CD178D6024E17D4A648126" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_552BE12728C1DFB814C2E17D4A6419C6" xlink:to="loc_us-gaap_OperatingExpensesAbstract_A7E3305A86CD178D6024E17D4A648126" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpense_F9C503F2932234AF0DAFE17D4A64FC13" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingExpensesAbstract_A7E3305A86CD178D6024E17D4A648126" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpense_F9C503F2932234AF0DAFE17D4A64FC13" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SellingAndMarketingExpense" xlink:label="loc_us-gaap_SellingAndMarketingExpense_EB2ACB3CFAA13FA8A467E17D4A64ACD6" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingExpensesAbstract_A7E3305A86CD178D6024E17D4A648126" xlink:to="loc_us-gaap_SellingAndMarketingExpense_EB2ACB3CFAA13FA8A467E17D4A64ACD6" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_DB6D404C8C0B43FFE53DE17D4A64A494" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingExpensesAbstract_A7E3305A86CD178D6024E17D4A648126" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_DB6D404C8C0B43FFE53DE17D4A64A494" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="loc_us-gaap_OperatingExpenses_0F1DCBA2122CC4965912E17D4A640F09" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OperatingExpensesAbstract_A7E3305A86CD178D6024E17D4A648126" xlink:to="loc_us-gaap_OperatingExpenses_0F1DCBA2122CC4965912E17D4A640F09" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OperatingIncomeLoss" xlink:label="loc_us-gaap_OperatingIncomeLoss_A64E8F7373870D647FAFE1812D51E845" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_552BE12728C1DFB814C2E17D4A6419C6" xlink:to="loc_us-gaap_OperatingIncomeLoss_A64E8F7373870D647FAFE1812D51E845" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_OtherIncomeExpenseNetAbstract" xlink:label="loc_qlys_OtherIncomeExpenseNetAbstract_51D7EAF4F17D52E10733E17D4A644237" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_552BE12728C1DFB814C2E17D4A6419C6" xlink:to="loc_qlys_OtherIncomeExpenseNetAbstract_51D7EAF4F17D52E10733E17D4A644237" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_InterestExpense" xlink:label="loc_us-gaap_InterestExpense_818D55E6ACFB29809D50E17D4A649368" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_OtherIncomeExpenseNetAbstract_51D7EAF4F17D52E10733E17D4A644237" xlink:to="loc_us-gaap_InterestExpense_818D55E6ACFB29809D50E17D4A649368" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_InvestmentIncomeInterest" xlink:label="loc_us-gaap_InvestmentIncomeInterest_64A0080C61DFBD35F366E17D4A65197E" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_OtherIncomeExpenseNetAbstract_51D7EAF4F17D52E10733E17D4A644237" xlink:to="loc_us-gaap_InvestmentIncomeInterest_64A0080C61DFBD35F366E17D4A65197E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_62461829A77C24DD6CEEE17D4A65EEFA" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_OtherIncomeExpenseNetAbstract_51D7EAF4F17D52E10733E17D4A644237" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_62461829A77C24DD6CEEE17D4A65EEFA" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_CC7615D8650DAEBCE416E17D4A650EEE" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_OtherIncomeExpenseNetAbstract_51D7EAF4F17D52E10733E17D4A644237" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_CC7615D8650DAEBCE416E17D4A650EEE" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_14C12B5A0C6AF3E10ADCE17D4A65C36D" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_552BE12728C1DFB814C2E17D4A6419C6" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments_14C12B5A0C6AF3E10ADCE17D4A65C36D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_DFA3BE0CBC8CEEEF1FCEE17D4A65B928" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_552BE12728C1DFB814C2E17D4A6419C6" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_DFA3BE0CBC8CEEEF1FCEE17D4A65B928" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_81228EAF638B2D37E405E17D4A65F876" xlink:type="locator" />
    <presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_552BE12728C1DFB814C2E17D4A6419C6" xlink:to="loc_us-gaap_NetIncomeLoss_81228EAF638B2D37E405E17D4A65F876" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_2C08856FD9E50F0C038FE17D4A654563" xlink:type="locator" />
    <presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_552BE12728C1DFB814C2E17D4A6419C6" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_2C08856FD9E50F0C038FE17D4A654563" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="loc_us-gaap_EarningsPerShareAbstract_40F0A989D592B4695ACCE17D4A650F67" xlink:type="locator" />
    <presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_552BE12728C1DFB814C2E17D4A6419C6" xlink:to="loc_us-gaap_EarningsPerShareAbstract_40F0A989D592B4695ACCE17D4A650F67" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="loc_us-gaap_EarningsPerShareBasic_ABCB1C3B98866838C5CAE17D4A65B560" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_40F0A989D592B4695ACCE17D4A650F67" xlink:to="loc_us-gaap_EarningsPerShareBasic_ABCB1C3B98866838C5CAE17D4A65B560" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="loc_us-gaap_EarningsPerShareDiluted_F615A2BD2D62B25B87B3E17D4A650294" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_40F0A989D592B4695ACCE17D4A650F67" xlink:to="loc_us-gaap_EarningsPerShareDiluted_F615A2BD2D62B25B87B3E17D4A650294" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_5E2DB8E436B1429387B1E17D4A6531F7" xlink:type="locator" />
    <presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementLineItems_552BE12728C1DFB814C2E17D4A6419C6" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_5E2DB8E436B1429387B1E17D4A6531F7" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_2858574AE136C0D9EAA2E17D4A65E301" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_5E2DB8E436B1429387B1E17D4A6531F7" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_2858574AE136C0D9EAA2E17D4A65E301" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_CECBFE6B40FAEAB11929E17D4A65F441" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_5E2DB8E436B1429387B1E17D4A6531F7" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_CECBFE6B40FAEAB11929E17D4A65F441" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/DocumentAndEntityInformation" xlink:type="extended">
    <loc xlink:href="qlys-20120930.xsd#qlys_DocumentAndEntityInformationAbstract" xlink:label="loc_qlys_DocumentAndEntityInformationAbstract_E45D0B59CE0087C88457E5F96A22D9A7" xlink:type="locator" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityRegistrantName" xlink:label="loc_dei_EntityRegistrantName_02E590F0D466B1358D54E5F96A25DBF9" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_DocumentAndEntityInformationAbstract_E45D0B59CE0087C88457E5F96A22D9A7" xlink:to="loc_dei_EntityRegistrantName_02E590F0D466B1358D54E5F96A25DBF9" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityCentralIndexKey" xlink:label="loc_dei_EntityCentralIndexKey_77F0115F67E623E1CC32E5F96A2686A4" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_DocumentAndEntityInformationAbstract_E45D0B59CE0087C88457E5F96A22D9A7" xlink:to="loc_dei_EntityCentralIndexKey_77F0115F67E623E1CC32E5F96A2686A4" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentType" xlink:label="loc_dei_DocumentType_7A6432BAF5DAF6277EC6E5F96A26D82E" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_DocumentAndEntityInformationAbstract_E45D0B59CE0087C88457E5F96A22D9A7" xlink:to="loc_dei_DocumentType_7A6432BAF5DAF6277EC6E5F96A26D82E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentPeriodEndDate" xlink:label="loc_dei_DocumentPeriodEndDate_65D9ACE6FAEA07F7F8A7E5F96A26E4EC" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_DocumentAndEntityInformationAbstract_E45D0B59CE0087C88457E5F96A22D9A7" xlink:to="loc_dei_DocumentPeriodEndDate_65D9ACE6FAEA07F7F8A7E5F96A26E4EC" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_AmendmentFlag" xlink:label="loc_dei_AmendmentFlag_3848A52ABB630118E5F1E5F96A269E25" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_DocumentAndEntityInformationAbstract_E45D0B59CE0087C88457E5F96A22D9A7" xlink:to="loc_dei_AmendmentFlag_3848A52ABB630118E5F1E5F96A269E25" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentFiscalYearFocus" xlink:label="loc_dei_DocumentFiscalYearFocus_702398B008A47DAC1E0DE5F96A26A7A1" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_DocumentAndEntityInformationAbstract_E45D0B59CE0087C88457E5F96A22D9A7" xlink:to="loc_dei_DocumentFiscalYearFocus_702398B008A47DAC1E0DE5F96A26A7A1" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="loc_dei_DocumentFiscalPeriodFocus_42855C8228E451A41900E5F96A268D16" xlink:type="locator" />
    <presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_DocumentAndEntityInformationAbstract_E45D0B59CE0087C88457E5F96A22D9A7" xlink:to="loc_dei_DocumentFiscalPeriodFocus_42855C8228E451A41900E5F96A268D16" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:label="loc_dei_CurrentFiscalYearEndDate_E215B39C55A765CF6CB1E5F96A2640C5" xlink:type="locator" />
    <presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_DocumentAndEntityInformationAbstract_E45D0B59CE0087C88457E5F96A22D9A7" xlink:to="loc_dei_CurrentFiscalYearEndDate_E215B39C55A765CF6CB1E5F96A2640C5" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityFilerCategory" xlink:label="loc_dei_EntityFilerCategory_E8592979DB07732AA779E5F96A277581" xlink:type="locator" />
    <presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_DocumentAndEntityInformationAbstract_E45D0B59CE0087C88457E5F96A22D9A7" xlink:to="loc_dei_EntityFilerCategory_E8592979DB07732AA779E5F96A277581" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/dei/2012/dei-2012-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_53A292A717D970BBCAEDE5F96A27B756" xlink:type="locator" />
    <presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_DocumentAndEntityInformationAbstract_E45D0B59CE0087C88457E5F96A22D9A7" xlink:to="loc_dei_EntityCommonStockSharesOutstanding_53A292A717D970BBCAEDE5F96A27B756" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/EmployeeStockAndBenefitPlans" xlink:type="extended">
    <loc xlink:href="qlys-20120930.xsd#qlys_EmployeeStockAndBenefitPlansAbstract" xlink:label="loc_qlys_EmployeeStockAndBenefitPlansAbstract_ACD71904E17BD59812C0D768D8B2517D" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CompensationAndEmployeeBenefitPlansTextBlock" xlink:label="loc_us-gaap_CompensationAndEmployeeBenefitPlansTextBlock_60BADE2AB12810CED8B2D768D8B275E6" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_EmployeeStockAndBenefitPlansAbstract_ACD71904E17BD59812C0D768D8B2517D" xlink:to="loc_us-gaap_CompensationAndEmployeeBenefitPlansTextBlock_60BADE2AB12810CED8B2D768D8B275E6" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/EmployeeStockAndBenefitPlansExpenseDetails" xlink:type="extended">
    <loc xlink:href="qlys-20120930.xsd#qlys_EmployeeStockAndBenefitPlansAbstract" xlink:label="loc_qlys_EmployeeStockAndBenefitPlansAbstract_B7F50131A884E1AAF4C0DBF30B33AC03" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable" xlink:label="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_B09A0FBD08D13475C14EDBF30B33B97B" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_EmployeeStockAndBenefitPlansAbstract_B7F50131A884E1AAF4C0DBF30B33AC03" xlink:to="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_B09A0FBD08D13475C14EDBF30B33B97B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsByReportLineAxis" xlink:label="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsByReportLineAxis_35AF2F519F3F7569CC36DBF30B331028" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_B09A0FBD08D13475C14EDBF30B33B97B" xlink:to="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsByReportLineAxis_35AF2F519F3F7569CC36DBF30B331028" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsReportLineDomain" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsReportLineDomain_FFF87DFF72893B5A6A65DBF30B331FFE" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsByReportLineAxis_35AF2F519F3F7569CC36DBF30B331028" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsReportLineDomain_FFF87DFF72893B5A6A65DBF30B331FFE" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CostOfSalesMember" xlink:label="loc_us-gaap_CostOfSalesMember_CE1274BED79454455768DBF30B33A022" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsReportLineDomain_FFF87DFF72893B5A6A65DBF30B331FFE" xlink:to="loc_us-gaap_CostOfSalesMember_CE1274BED79454455768DBF30B33A022" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ResearchAndDevelopmentExpenseMember" xlink:label="loc_us-gaap_ResearchAndDevelopmentExpenseMember_C6900EA224A1D2D2D338DBF30B33CD1E" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsReportLineDomain_FFF87DFF72893B5A6A65DBF30B331FFE" xlink:to="loc_us-gaap_ResearchAndDevelopmentExpenseMember_C6900EA224A1D2D2D338DBF30B33CD1E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SellingAndMarketingExpenseMember" xlink:label="loc_us-gaap_SellingAndMarketingExpenseMember_4357E00588BD876AFF1FDBF30B337947" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsReportLineDomain_FFF87DFF72893B5A6A65DBF30B331FFE" xlink:to="loc_us-gaap_SellingAndMarketingExpenseMember_4357E00588BD876AFF1FDBF30B337947" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GeneralAndAdministrativeExpenseMember" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpenseMember_A22AD5E954DA6D895002DBF30B33594C" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsReportLineDomain_FFF87DFF72893B5A6A65DBF30B331FFE" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpenseMember_A22AD5E954DA6D895002DBF30B33594C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_90815E31099E4AC54ED2DBF30B33F430" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTable_B09A0FBD08D13475C14EDBF30B33B97B" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_90815E31099E4AC54ED2DBF30B33F430" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="loc_us-gaap_AllocatedShareBasedCompensationExpense_9AC1DE61C0FB0ED82338DBF30B330690" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_90815E31099E4AC54ED2DBF30B33F430" xlink:to="loc_us-gaap_AllocatedShareBasedCompensationExpense_9AC1DE61C0FB0ED82338DBF30B330690" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_4D6204160AB8DC0E1732DBF30B33C0BC" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_90815E31099E4AC54ED2DBF30B33F430" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_4D6204160AB8DC0E1732DBF30B33C0BC" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:label="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_2D62F0A6A373E6C8EA09DBF30B3339BD" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_90815E31099E4AC54ED2DBF30B33F430" xlink:to="loc_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_2D62F0A6A373E6C8EA09DBF30B3339BD" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionExpense" xlink:label="loc_us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionExpense_92A8A9522793EB47DBA6DBF30B33B709" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsLineItems_90815E31099E4AC54ED2DBF30B33F430" xlink:to="loc_us-gaap_ShareBasedGoodsAndNonemployeeServicesTransactionExpense_92A8A9522793EB47DBA6DBF30B33B709" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/EmployeeStockAndBenefitPlansFairValueAssumptionsStockOptionsDetails" xlink:type="extended">
    <loc xlink:href="qlys-20120930.xsd#qlys_EmployeeStockAndBenefitPlansAbstract" xlink:label="loc_qlys_EmployeeStockAndBenefitPlansAbstract_663F4AC39F510AF9D709DC22EBE4107E" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_7B3E68292FCBF4F46D68DC22EBE57985" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_EmployeeStockAndBenefitPlansAbstract_663F4AC39F510AF9D709DC22EBE4107E" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_7B3E68292FCBF4F46D68DC22EBE57985" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis_A928978A46C65B95BA8DDC22EBE52663" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_7B3E68292FCBF4F46D68DC22EBE57985" xlink:to="loc_us-gaap_RangeAxis_A928978A46C65B95BA8DDC22EBE52663" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_B561BB1D54197FA3BAB7DC22EBE52882" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RangeAxis_A928978A46C65B95BA8DDC22EBE52663" xlink:to="loc_us-gaap_RangeMember_B561BB1D54197FA3BAB7DC22EBE52882" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_MinimumMember" xlink:label="loc_us-gaap_MinimumMember_DD074BD4973C15E5E164DC22EBE5AC6B" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RangeMember_B561BB1D54197FA3BAB7DC22EBE52882" xlink:to="loc_us-gaap_MinimumMember_DD074BD4973C15E5E164DC22EBE5AC6B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_MaximumMember" xlink:label="loc_us-gaap_MaximumMember_10186128BC3FF1409387DC22EBE51075" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RangeMember_B561BB1D54197FA3BAB7DC22EBE52882" xlink:to="loc_us-gaap_MaximumMember_10186128BC3FF1409387DC22EBE51075" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_934C718744AFA0BB569CDC22EBE5C827" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_7B3E68292FCBF4F46D68DC22EBE57985" xlink:to="loc_us-gaap_AwardTypeAxis_934C718744AFA0BB569CDC22EBE5C827" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_38350D05370256326168DC22EBE57078" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AwardTypeAxis_934C718744AFA0BB569CDC22EBE5C827" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_38350D05370256326168DC22EBE57078" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StockOptionsMember" xlink:label="loc_us-gaap_StockOptionsMember_48A61037A86B1DF82EC8DC22EBE52FF1" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_38350D05370256326168DC22EBE57078" xlink:to="loc_us-gaap_StockOptionsMember_48A61037A86B1DF82EC8DC22EBE52FF1" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_D3C53AAEBCE054400064DC22EBE5A7E2" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_7B3E68292FCBF4F46D68DC22EBE57985" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_D3C53AAEBCE054400064DC22EBE5A7E2" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_381F97B2769DE056D060DC22EBE5B277" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_D3C53AAEBCE054400064DC22EBE5A7E2" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1_381F97B2769DE056D060DC22EBE5B277" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_DA2F2092D958D5CC0971DC22EBE52F2E" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_D3C53AAEBCE054400064DC22EBE5A7E2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate_DA2F2092D958D5CC0971DC22EBE52F2E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_818AAC3AC782771CA20CDC22EBE54868" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_D3C53AAEBCE054400064DC22EBE5A7E2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate_818AAC3AC782771CA20CDC22EBE54868" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_F4AFD2E5909B080BDC40DC22EBE5601A" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_D3C53AAEBCE054400064DC22EBE5A7E2" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate_F4AFD2E5909B080BDC40DC22EBE5601A" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/EmployeeStockAndBenefitPlansPlanInformationDetails" xlink:type="extended">
    <loc xlink:href="qlys-20120930.xsd#qlys_EmployeeStockAndBenefitPlansAbstract" xlink:label="loc_qlys_EmployeeStockAndBenefitPlansAbstract_39408609F81157E695E2E5F562B2FD64" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_DFB3B20D82BA3247648FE5F562B3160C" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_EmployeeStockAndBenefitPlansAbstract_39408609F81157E695E2E5F562B2FD64" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_DFB3B20D82BA3247648FE5F562B3160C" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_EquityIncentivePlanAnnualIncreaseFeatureAxis" xlink:label="loc_qlys_EquityIncentivePlanAnnualIncreaseFeatureAxis_C73D8BB5AD013D225816E5F562B32067" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_DFB3B20D82BA3247648FE5F562B3160C" xlink:to="loc_qlys_EquityIncentivePlanAnnualIncreaseFeatureAxis_C73D8BB5AD013D225816E5F562B32067" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_EquityIncentivePlanAnnualIncreaseFeatureDomain" xlink:label="loc_qlys_EquityIncentivePlanAnnualIncreaseFeatureDomain_269DC37707211CEBFA01E5F562B3E8B9" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_EquityIncentivePlanAnnualIncreaseFeatureAxis_C73D8BB5AD013D225816E5F562B32067" xlink:to="loc_qlys_EquityIncentivePlanAnnualIncreaseFeatureDomain_269DC37707211CEBFA01E5F562B3E8B9" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_IncreaseOfNumberOfSharesOptionMember" xlink:label="loc_qlys_IncreaseOfNumberOfSharesOptionMember_D4FC0502A1293262F6D2E5F562B37260" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_EquityIncentivePlanAnnualIncreaseFeatureDomain_269DC37707211CEBFA01E5F562B3E8B9" xlink:to="loc_qlys_IncreaseOfNumberOfSharesOptionMember_D4FC0502A1293262F6D2E5F562B37260" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_IncreaseOfPercentageOfSharesOutstandingOptionMember" xlink:label="loc_qlys_IncreaseOfPercentageOfSharesOutstandingOptionMember_29B8575874237ED73239E5F562B3073C" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_EquityIncentivePlanAnnualIncreaseFeatureDomain_269DC37707211CEBFA01E5F562B3E8B9" xlink:to="loc_qlys_IncreaseOfPercentageOfSharesOutstandingOptionMember_29B8575874237ED73239E5F562B3073C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="loc_us-gaap_PlanNameAxis_B973496DC137CA9FBD6CE5F562B365E5" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_DFB3B20D82BA3247648FE5F562B3160C" xlink:to="loc_us-gaap_PlanNameAxis_B973496DC137CA9FBD6CE5F562B365E5" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_699540E7E7271FF3B07FE5F562B38DA9" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanNameAxis_B973496DC137CA9FBD6CE5F562B365E5" xlink:to="loc_us-gaap_PlanNameDomain_699540E7E7271FF3B07FE5F562B38DA9" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_A2000EquityIncentivePlanMember" xlink:label="loc_qlys_A2000EquityIncentivePlanMember_F6EEAAACF43B3FD13A7AE5F562B37DBC" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanNameDomain_699540E7E7271FF3B07FE5F562B38DA9" xlink:to="loc_qlys_A2000EquityIncentivePlanMember_F6EEAAACF43B3FD13A7AE5F562B37DBC" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_A2012EquityIncentivePlanMember" xlink:label="loc_qlys_A2012EquityIncentivePlanMember_DCD915DA18882F5D24E3E5F562B3B7FA" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanNameDomain_699540E7E7271FF3B07FE5F562B38DA9" xlink:to="loc_qlys_A2012EquityIncentivePlanMember_DCD915DA18882F5D24E3E5F562B3B7FA" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_986CA3A4D60809DD2825E5F562B31562" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_DFB3B20D82BA3247648FE5F562B3160C" xlink:to="loc_us-gaap_AwardTypeAxis_986CA3A4D60809DD2825E5F562B31562" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_A5A3015AAD993DA9FEA7E5F562B364F2" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AwardTypeAxis_986CA3A4D60809DD2825E5F562B31562" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_A5A3015AAD993DA9FEA7E5F562B364F2" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StockOptionsMember" xlink:label="loc_us-gaap_StockOptionsMember_05BBB14471168B0721C1E5F562B3BB5E" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_A5A3015AAD993DA9FEA7E5F562B364F2" xlink:to="loc_us-gaap_StockOptionsMember_05BBB14471168B0721C1E5F562B3BB5E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RangeAxis" xlink:label="loc_us-gaap_RangeAxis_0A700D2F8C560EEC9326E5F562B3C3DC" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_DFB3B20D82BA3247648FE5F562B3160C" xlink:to="loc_us-gaap_RangeAxis_0A700D2F8C560EEC9326E5F562B3C3DC" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RangeMember" xlink:label="loc_us-gaap_RangeMember_653F7D0F87BC0F3A90A8E5F562B38B76" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RangeAxis_0A700D2F8C560EEC9326E5F562B3C3DC" xlink:to="loc_us-gaap_RangeMember_653F7D0F87BC0F3A90A8E5F562B38B76" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_MinimumMember" xlink:label="loc_us-gaap_MinimumMember_EF4E4A550AC1D44E719DE5F562B44EBF" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_RangeMember_653F7D0F87BC0F3A90A8E5F562B38B76" xlink:to="loc_us-gaap_MinimumMember_EF4E4A550AC1D44E719DE5F562B44EBF" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_D4609D8504CCF33A53E0E5F562B47B3A" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_DFB3B20D82BA3247648FE5F562B3160C" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_D4609D8504CCF33A53E0E5F562B47B3A" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_02CA94771E43C5224A00E5F562B4A9AD" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_D4609D8504CCF33A53E0E5F562B47B3A" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_02CA94771E43C5224A00E5F562B4A9AD" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardStrikePriceAsPercentageOfMarketValue" xlink:label="loc_qlys_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardStrikePriceAsPercentageOfMarketValue_9FEFFB0E186006996B00E5F562B4A0A2" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_D4609D8504CCF33A53E0E5F562B47B3A" xlink:to="loc_qlys_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardStrikePriceAsPercentageOfMarketValue_9FEFFB0E186006996B00E5F562B4A0A2" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_DA35BBF3E2D213015ADAE5F562B4DA86" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_D4609D8504CCF33A53E0E5F562B47B3A" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_DA35BBF3E2D213015ADAE5F562B4DA86" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermOfAward" xlink:label="loc_qlys_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermOfAward_D4BA2E1F23C313633CC2E5F562B42CDD" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_D4609D8504CCF33A53E0E5F562B47B3A" xlink:to="loc_qlys_ShareBasedCompensationArrangementByShareBasedPaymentAwardTermOfAward_D4BA2E1F23C313633CC2E5F562B42CDD" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesSubjectToRepurchase" xlink:label="loc_qlys_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesSubjectToRepurchase_538A624CD077749EDAA2E5F562B44017" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_D4609D8504CCF33A53E0E5F562B47B3A" xlink:to="loc_qlys_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesSubjectToRepurchase_538A624CD077749EDAA2E5F562B44017" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfUnvestedSharesRepurchased" xlink:label="loc_qlys_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfUnvestedSharesRepurchased_EB650236F778E81C9E6DE5F562B4F322" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_D4609D8504CCF33A53E0E5F562B47B3A" xlink:to="loc_qlys_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfUnvestedSharesRepurchased_EB650236F778E81C9E6DE5F562B4F322" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_ShareBasedCompensationArrangementByShareBasedPaymentAwardLiabilityForOptionsEarlyExercised" xlink:label="loc_qlys_ShareBasedCompensationArrangementByShareBasedPaymentAwardLiabilityForOptionsEarlyExercised_67B0F9EA5C0B7BA6E691E5F562B477D1" xlink:type="locator" />
    <presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_D4609D8504CCF33A53E0E5F562B47B3A" xlink:to="loc_qlys_ShareBasedCompensationArrangementByShareBasedPaymentAwardLiabilityForOptionsEarlyExercised_67B0F9EA5C0B7BA6E691E5F562B477D1" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorizedAnnualIncreaseShares" xlink:label="loc_qlys_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorizedAnnualIncreaseShares_8DB6DCB3D5CD1467713BE5F562B47D10" xlink:type="locator" />
    <presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_D4609D8504CCF33A53E0E5F562B47B3A" xlink:to="loc_qlys_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorizedAnnualIncreaseShares_8DB6DCB3D5CD1467713BE5F562B47D10" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorizedAnnualIncreasePercentOfSharesOutstanding" xlink:label="loc_qlys_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorizedAnnualIncreasePercentOfSharesOutstanding_467C3011E9D96DC6DBF7E5F562B49AB6" xlink:type="locator" />
    <presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_D4609D8504CCF33A53E0E5F562B47B3A" xlink:to="loc_qlys_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorizedAnnualIncreasePercentOfSharesOutstanding_467C3011E9D96DC6DBF7E5F562B49AB6" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/EmployeeStockAndBenefitPlansStockOptionActivityDetails" xlink:type="extended">
    <loc xlink:href="qlys-20120930.xsd#qlys_EmployeeStockAndBenefitPlansAbstract" xlink:label="loc_qlys_EmployeeStockAndBenefitPlansAbstract_03889C1DBF861CE7D712DBF30B147783" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_1E1524BD4E490A46A9B0DBF30B143836" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_EmployeeStockAndBenefitPlansAbstract_03889C1DBF861CE7D712DBF30B147783" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_1E1524BD4E490A46A9B0DBF30B143836" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_34143A081FA68512FF31DBF30B14D592" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_1E1524BD4E490A46A9B0DBF30B143836" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_34143A081FA68512FF31DBF30B14D592" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_992B140FFCA80D8EA4F9DBF30B140F2A" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_1E1524BD4E490A46A9B0DBF30B143836" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross_992B140FFCA80D8EA4F9DBF30B140F2A" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_E92D8951680765B71669DBF30B141ED5" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_1E1524BD4E490A46A9B0DBF30B143836" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_E92D8951680765B71669DBF30B141ED5" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_5689C90238843F763AB7DBF30B14620A" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2009/role/negatedLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_1E1524BD4E490A46A9B0DBF30B143836" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod_5689C90238843F763AB7DBF30B14620A" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_64935A30E131319361E8DBF30B145C01" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingRollForward_1E1524BD4E490A46A9B0DBF30B143836" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_64935A30E131319361E8DBF30B145C01" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_DEEB96C3306CFAACFE27DBF30B15B9B8" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_EmployeeStockAndBenefitPlansAbstract_03889C1DBF861CE7D712DBF30B147783" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_DEEB96C3306CFAACFE27DBF30B15B9B8" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_80D42E4F934FEBB5702BDBF30B159A67" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/periodStartLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_DEEB96C3306CFAACFE27DBF30B15B9B8" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_80D42E4F934FEBB5702BDBF30B159A67" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_E7DDBFC33C91F26ACB19DBF30B152B91" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_DEEB96C3306CFAACFE27DBF30B15B9B8" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice_E7DDBFC33C91F26ACB19DBF30B152B91" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_1B5C946FB96377F06607DBF30B15645C" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_DEEB96C3306CFAACFE27DBF30B15B9B8" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice_1B5C946FB96377F06607DBF30B15645C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_308B0F92A387C4890E64DBF30B150E48" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_DEEB96C3306CFAACFE27DBF30B15B9B8" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice_308B0F92A387C4890E64DBF30B150E48" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_0F0F418334D07BF146DBDBF30B157F15" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/periodEndLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePriceRollforward_DEEB96C3306CFAACFE27DBF30B15B9B8" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice_0F0F418334D07BF146DBDBF30B157F15" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_9FEFA48914C04997D1C4DBF30B15F64E" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_EmployeeStockAndBenefitPlansAbstract_03889C1DBF861CE7D712DBF30B147783" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2_9FEFA48914C04997D1C4DBF30B15F64E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_0F1285A7627047139A81DBF30B15C900" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_EmployeeStockAndBenefitPlansAbstract_03889C1DBF861CE7D712DBF30B147783" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_0F1285A7627047139A81DBF30B15C900" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber_03977402E95D4C3ABDB2DBF30B15343A" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_EmployeeStockAndBenefitPlansAbstract_03889C1DBF861CE7D712DBF30B147783" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingNumber_03977402E95D4C3ABDB2DBF30B15343A" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber_A44C4EE99E9AF47B4D1CDBF30B1558CC" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_EmployeeStockAndBenefitPlansAbstract_03889C1DBF861CE7D712DBF30B147783" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableNumber_A44C4EE99E9AF47B4D1CDBF30B1558CC" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice_57874C5E04C30627B77CDBF30B1543C1" xlink:type="locator" />
    <presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_EmployeeStockAndBenefitPlansAbstract_03889C1DBF861CE7D712DBF30B147783" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageExercisePrice_57874C5E04C30627B77CDBF30B1543C1" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice_E8A7BF56D56592ACE00FDBF30B163AB8" xlink:type="locator" />
    <presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_EmployeeStockAndBenefitPlansAbstract_03889C1DBF861CE7D712DBF30B147783" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageExercisePrice_E8A7BF56D56592ACE00FDBF30B163AB8" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1_7D0AFC00424A29BABBD1DBF30B161D5F" xlink:type="locator" />
    <presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_EmployeeStockAndBenefitPlansAbstract_03889C1DBF861CE7D712DBF30B147783" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestOutstandingWeightedAverageRemainingContractualTerm1_7D0AFC00424A29BABBD1DBF30B161D5F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1" xlink:label="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1_B292B3FF380818CF4DCADBF30B16C955" xlink:type="locator" />
    <presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_EmployeeStockAndBenefitPlansAbstract_03889C1DBF861CE7D712DBF30B147783" xlink:to="loc_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedAndExpectedToVestExercisableWeightedAverageRemainingContractualTerm1_B292B3FF380818CF4DCADBF30B16C955" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/EmployeeStockAndBenefitPlansTables" xlink:type="extended">
    <loc xlink:href="qlys-20120930.xsd#qlys_EmployeeStockAndBenefitPlansAbstract" xlink:label="loc_qlys_EmployeeStockAndBenefitPlansAbstract_51806CCAF8DA07ECB913DBF309DFB4B7" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock" xlink:label="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock_241674B057AB12BAC319DBF309DF3AB5" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_EmployeeStockAndBenefitPlansAbstract_51806CCAF8DA07ECB913DBF309DFB4B7" xlink:to="loc_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock_241674B057AB12BAC319DBF309DF3AB5" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_EDB21B92C2A35D36A844DBF309DF72BD" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_EmployeeStockAndBenefitPlansAbstract_51806CCAF8DA07ECB913DBF309DFB4B7" xlink:to="loc_us-gaap_ScheduleOfShareBasedPaymentAwardStockOptionsValuationAssumptionsTableTextBlock_EDB21B92C2A35D36A844DBF309DF72BD" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_92D487635C5DB1C4B63ADBF309DFE731" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_EmployeeStockAndBenefitPlansAbstract_51806CCAF8DA07ECB913DBF309DFB4B7" xlink:to="loc_us-gaap_ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock_92D487635C5DB1C4B63ADBF309DFE731" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/GoodwillAndIntangibleAssetsNet" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_8189D102A8416EE46993DBDC99DE48BD" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_74D4A378A323810943DFDBDC99DE943B" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_8189D102A8416EE46993DBDC99DE48BD" xlink:to="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureTextBlock_74D4A378A323810943DFDBDC99DE943B" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/GoodwillAndIntangibleAssetsNetDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_D69D434D4F97710B6FE7E155936B21E6" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScheduleOfGoodwillTable" xlink:label="loc_us-gaap_ScheduleOfGoodwillTable_F8B338B1E41680D6D513E155936BD306" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_D69D434D4F97710B6FE7E155936B21E6" xlink:to="loc_us-gaap_ScheduleOfGoodwillTable_F8B338B1E41680D6D513E155936BD306" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_093CF961CB11E15DAF81E155936B21EA" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_F8B338B1E41680D6D513E155936BD306" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_093CF961CB11E15DAF81E155936B21EA" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_1738733265C972DCBACFE155936B378B" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_093CF961CB11E15DAF81E155936B21EA" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_1738733265C972DCBACFE155936B378B" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_ExistingTechnologyMember" xlink:label="loc_qlys_ExistingTechnologyMember_CD34D8F2239F65801688E155936B032A" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_1738733265C972DCBACFE155936B378B" xlink:to="loc_qlys_ExistingTechnologyMember_CD34D8F2239F65801688E155936B032A" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DevelopedTechnologyRightsMember" xlink:label="loc_us-gaap_DevelopedTechnologyRightsMember_E46B7A3112EA9676445BE155936BEB8F" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_1738733265C972DCBACFE155936B378B" xlink:to="loc_us-gaap_DevelopedTechnologyRightsMember_E46B7A3112EA9676445BE155936BEB8F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PatentsMember" xlink:label="loc_us-gaap_PatentsMember_DD01990CD89725DB0EEAE155936B4454" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_1738733265C972DCBACFE155936B378B" xlink:to="loc_us-gaap_PatentsMember_DD01990CD89725DB0EEAE155936B4454" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_NonCompetitionAgreementsAndOtherIntangibleAssetsMemberMember" xlink:label="loc_qlys_NonCompetitionAgreementsAndOtherIntangibleAssetsMemberMember_BD1E7ABB1E5800D1664AE155936B0009" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_1738733265C972DCBACFE155936B378B" xlink:to="loc_qlys_NonCompetitionAgreementsAndOtherIntangibleAssetsMemberMember_BD1E7ABB1E5800D1664AE155936B0009" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GoodwillLineItems" xlink:label="loc_us-gaap_GoodwillLineItems_9376B8C07D226B42EDD9E155936BFB70" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfGoodwillTable_F8B338B1E41680D6D513E155936BD306" xlink:to="loc_us-gaap_GoodwillLineItems_9376B8C07D226B42EDD9E155936BFB70" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_27309A27126DAD8AA277E155936C6CA1" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillLineItems_9376B8C07D226B42EDD9E155936BFB70" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetUsefulLife_27309A27126DAD8AA277E155936C6CA1" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_9560E79BE790E2210143E155936C86DF" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillLineItems_9376B8C07D226B42EDD9E155936BFB70" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_9560E79BE790E2210143E155936C86DF" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_8886323ABFFC6981E902E155936C976F" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillLineItems_9376B8C07D226B42EDD9E155936BFB70" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_8886323ABFFC6981E902E155936C976F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_4B404F26EDC786A35D22E155936C3BA8" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillLineItems_9376B8C07D226B42EDD9E155936BFB70" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_4B404F26EDC786A35D22E155936C3BA8" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_5668A8424D6981AAD4F3E155936CEC35" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillLineItems_9376B8C07D226B42EDD9E155936BFB70" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_5668A8424D6981AAD4F3E155936CEC35" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_2FAEC642DE3F4DD652B6E155936CE788" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillLineItems_9376B8C07D226B42EDD9E155936BFB70" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_2FAEC642DE3F4DD652B6E155936CE788" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_D6B35451341B36522A42E155936C3EF9" xlink:type="locator" />
    <presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillLineItems_9376B8C07D226B42EDD9E155936BFB70" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_D6B35451341B36522A42E155936C3EF9" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_Goodwill" xlink:label="loc_us-gaap_Goodwill_D8ECA3774B7631ACB1ADE155936C21FA" xlink:type="locator" />
    <presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillLineItems_9376B8C07D226B42EDD9E155936BFB70" xlink:to="loc_us-gaap_Goodwill_D8ECA3774B7631ACB1ADE155936C21FA" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/GoodwillAndIntangibleAssetsNetFutureAmortizationDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_2ED73ED64D35D7DBFE17DBF11AE2AFF4" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_97040A9B83039FDB6C90DBF11AE20C5E" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_2ED73ED64D35D7DBFE17DBF11AE2AFF4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_97040A9B83039FDB6C90DBF11AE20C5E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_DC1EB88CDD674BEE039BDBF11AE22EAE" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_2ED73ED64D35D7DBFE17DBF11AE2AFF4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_DC1EB88CDD674BEE039BDBF11AE22EAE" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_D46EA62D45459D2BC074DBF11AE34878" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_2ED73ED64D35D7DBFE17DBF11AE2AFF4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_D46EA62D45459D2BC074DBF11AE34878" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_83B20BB757F21BDB0B54DBF11AE3A3E9" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_2ED73ED64D35D7DBFE17DBF11AE2AFF4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_83B20BB757F21BDB0B54DBF11AE3A3E9" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_3E08C257573D4D694669DBF11AE3BB1E" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_2ED73ED64D35D7DBFE17DBF11AE2AFF4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_3E08C257573D4D694669DBF11AE3BB1E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_862B2861424829B15E48DBF11AE3DF7B" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_2ED73ED64D35D7DBFE17DBF11AE2AFF4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_862B2861424829B15E48DBF11AE3DF7B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_50CB2408A6B9C00977B4DBF11AE30957" xlink:type="locator" />
    <presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_2ED73ED64D35D7DBFE17DBF11AE2AFF4" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_50CB2408A6B9C00977B4DBF11AE30957" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/GoodwillAndIntangibleAssetsNetTables" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract" xlink:label="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_01879E3B58453E7DAA9CDBDC99C85D47" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetsByMajorClassTextBlock" xlink:label="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetsByMajorClassTextBlock_AC3AB8BD9B3C1C0A5363DBDC99C8C675" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_01879E3B58453E7DAA9CDBDC99C85D47" xlink:to="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetsByMajorClassTextBlock_AC3AB8BD9B3C1C0A5363DBDC99C8C675" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock" xlink:label="loc_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_9C9298ED3E3EBC1968C3DBDC99C8B4E4" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract_01879E3B58453E7DAA9CDBDC99C85D47" xlink:to="loc_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_9C9298ED3E3EBC1968C3DBDC99C8B4E4" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/IncomeTaxes" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract_53471C2D870156EA6C08D75ACE235C65" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncomeTaxDisclosureTextBlock" xlink:label="loc_us-gaap_IncomeTaxDisclosureTextBlock_C603C544372F0129E83CD7689E72E8D4" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_53471C2D870156EA6C08D75ACE235C65" xlink:to="loc_us-gaap_IncomeTaxDisclosureTextBlock_C603C544372F0129E83CD7689E72E8D4" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/IncomeTaxesDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncomeTaxDisclosureAbstract" xlink:label="loc_us-gaap_IncomeTaxDisclosureAbstract_D295A5EE7B69FCC541E6E11073749CFC" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:label="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_D7F31ED857C7BFA83316E1107374CA03" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_D295A5EE7B69FCC541E6E11073749CFC" xlink:to="loc_us-gaap_EffectiveIncomeTaxRateContinuingOperations_D7F31ED857C7BFA83316E1107374CA03" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_IncomeTaxExpenseBenefitContinuingOperationsAdjustmentToUnrecognizedTaxBenefits" xlink:label="loc_qlys_IncomeTaxExpenseBenefitContinuingOperationsAdjustmentToUnrecognizedTaxBenefits_C546B036FEFCCC7E1405E11073743D72" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_D295A5EE7B69FCC541E6E11073749CFC" xlink:to="loc_qlys_IncomeTaxExpenseBenefitContinuingOperationsAdjustmentToUnrecognizedTaxBenefits_C546B036FEFCCC7E1405E11073743D72" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_UnrecognizedTaxBenefits" xlink:label="loc_us-gaap_UnrecognizedTaxBenefits_D985BD3976A20A4EC225E1107374E558" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IncomeTaxDisclosureAbstract_D295A5EE7B69FCC541E6E11073749CFC" xlink:to="loc_us-gaap_UnrecognizedTaxBenefits_D985BD3976A20A4EC225E1107374E558" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/NetIncomePerShareAttributableToCommonStockholders" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="loc_us-gaap_EarningsPerShareAbstract_8A5BC44D38142A6C649AD26F7F0DF4A0" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EarningsPerShareTextBlock" xlink:label="loc_us-gaap_EarningsPerShareTextBlock_425A7C77F0474E0B67E6D26F7F0D9580" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_8A5BC44D38142A6C649AD26F7F0DF4A0" xlink:to="loc_us-gaap_EarningsPerShareTextBlock_425A7C77F0474E0B67E6D26F7F0D9580" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/NetIncomePerShareAttributableToCommonStockholdersDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="loc_us-gaap_EarningsPerShareAbstract_BF11C3AE9E2E8066B7FCE17D495ECF76" xlink:type="locator" />
    <loc xlink:href="qlys-20120930.xsd#qlys_NumeratorAbstract" xlink:label="loc_qlys_NumeratorAbstract_D9FC3550753A724269F1E17D495E9E02" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_BF11C3AE9E2E8066B7FCE17D495ECF76" xlink:to="loc_qlys_NumeratorAbstract_D9FC3550753A724269F1E17D495E9E02" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_A94A9E47327D4EB740D9E17D495F0040" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_NumeratorAbstract_D9FC3550753A724269F1E17D495E9E02" xlink:to="loc_us-gaap_NetIncomeLoss_A94A9E47327D4EB740D9E17D495F0040" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings" xlink:label="loc_us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings_C47BD62C77919040A536E17D495F580F" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_NumeratorAbstract_D9FC3550753A724269F1E17D495E9E02" xlink:to="loc_us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarnings_C47BD62C77919040A536E17D495F580F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_36AFCB1E70CE50D57F9EE17D495F3F1C" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_NumeratorAbstract_D9FC3550753A724269F1E17D495E9E02" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_36AFCB1E70CE50D57F9EE17D495F3F1C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities" xlink:label="loc_us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities_9D0B0BD3611A7678B8BAE17D495FF910" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_NumeratorAbstract_D9FC3550753A724269F1E17D495E9E02" xlink:to="loc_us-gaap_UndistributedEarningsAllocatedToParticipatingSecurities_9D0B0BD3611A7678B8BAE17D495FF910" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_55ACEFFEE7AE9CFE213AE17D495F79D2" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_NumeratorAbstract_D9FC3550753A724269F1E17D495E9E02" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_55ACEFFEE7AE9CFE213AE17D495F79D2" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_DenominatorAbstract" xlink:label="loc_qlys_DenominatorAbstract_5373219091C4398A1AEAE17D495F635E" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_BF11C3AE9E2E8066B7FCE17D495ECF76" xlink:to="loc_qlys_DenominatorAbstract_5373219091C4398A1AEAE17D495F635E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_E4C92A5FDD887DEE2BEFE17D495F5A12" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_DenominatorAbstract_5373219091C4398A1AEAE17D495F635E" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_E4C92A5FDD887DEE2BEFE17D495F5A12" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_DilutiveSecuritiesAbstract" xlink:label="loc_us-gaap_DilutiveSecuritiesAbstract_B7A77ADA633384EBF073E17D495FDC0D" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_DenominatorAbstract_5373219091C4398A1AEAE17D495F635E" xlink:to="loc_us-gaap_DilutiveSecuritiesAbstract_B7A77ADA633384EBF073E17D495FDC0D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncrementalCommonSharesAttributableToConversionOfPreferredStock" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToConversionOfPreferredStock_471ABF2FD975AD0FCBDEE17D495F9E55" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DilutiveSecuritiesAbstract_B7A77ADA633384EBF073E17D495FDC0D" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToConversionOfPreferredStock_471ABF2FD975AD0FCBDEE17D495F9E55" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_C4095A87BD1A1A691B7EE1919A49C88E" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DilutiveSecuritiesAbstract_B7A77ADA633384EBF073E17D495FDC0D" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_C4095A87BD1A1A691B7EE1919A49C88E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncrementalCommonSharesAttributableToCallOptionsAndWarrants" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToCallOptionsAndWarrants_5E6B96ED2B0404222937E17D495FA5F8" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DilutiveSecuritiesAbstract_B7A77ADA633384EBF073E17D495FDC0D" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToCallOptionsAndWarrants_5E6B96ED2B0404222937E17D495FA5F8" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IncrementalCommonSharesAttributableToContingentlyIssuableShares" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToContingentlyIssuableShares_4537E815D5F96C0A03A5E17D4960E396" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_DilutiveSecuritiesAbstract_B7A77ADA633384EBF073E17D495FDC0D" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToContingentlyIssuableShares_4537E815D5F96C0A03A5E17D4960E396" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_899B78A460C5FF871174E17D4960C155" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_DenominatorAbstract_5373219091C4398A1AEAE17D495F635E" xlink:to="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_899B78A460C5FF871174E17D4960C155" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EarningsPerShareBasic" xlink:label="loc_us-gaap_EarningsPerShareBasic_4423B58C1B1204D48B1AE17D49608E85" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_BF11C3AE9E2E8066B7FCE17D495ECF76" xlink:to="loc_us-gaap_EarningsPerShareBasic_4423B58C1B1204D48B1AE17D49608E85" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="loc_us-gaap_EarningsPerShareDiluted_FA82A92FF2013BA23DD0E17D49605751" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_BF11C3AE9E2E8066B7FCE17D495ECF76" xlink:to="loc_us-gaap_EarningsPerShareDiluted_FA82A92FF2013BA23DD0E17D49605751" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_4C04EAC0C0720B0C14A1E17D4960473D" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_BF11C3AE9E2E8066B7FCE17D495ECF76" xlink:to="loc_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount_4C04EAC0C0720B0C14A1E17D4960473D" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/NetIncomePerShareAttributableToCommonStockholdersTables" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="loc_us-gaap_EarningsPerShareAbstract_8CC53D4BF7646D84FA27D26F7F71C061" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_9C391DE7B040E1138038D26F7F712AAA" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_8CC53D4BF7646D84FA27D26F7F71C061" xlink:to="loc_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_9C391DE7B040E1138038D26F7F712AAA" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock" xlink:label="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock_8C5648FF6B9C660645DCD26F7F714599" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_EarningsPerShareAbstract_8CC53D4BF7646D84FA27D26F7F71C061" xlink:to="loc_us-gaap_ScheduleOfAntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareTextBlock_8C5648FF6B9C660645DCD26F7F714599" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/OtherIncomeExpenseNet" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherIncomeAndExpensesAbstract" xlink:label="loc_us-gaap_OtherIncomeAndExpensesAbstract_B71268BA65ABA1DAF09FBCFE4E356AD3" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherIncomeAndOtherExpenseDisclosureTextBlock" xlink:label="loc_us-gaap_OtherIncomeAndOtherExpenseDisclosureTextBlock_6F31728CD314E2EE67EABCFE4E489645" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OtherIncomeAndExpensesAbstract_B71268BA65ABA1DAF09FBCFE4E356AD3" xlink:to="loc_us-gaap_OtherIncomeAndOtherExpenseDisclosureTextBlock_6F31728CD314E2EE67EABCFE4E489645" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/OtherIncomeExpenseNetDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherIncomeAndExpensesAbstract" xlink:label="loc_us-gaap_OtherIncomeAndExpensesAbstract_891E4A7C7B60651927C3D26A596F34CA" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ForeignCurrencyTransactionGainLossBeforeTax" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_C32D28AA8C8294C01870D26A596F38AE" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OtherIncomeAndExpensesAbstract_891E4A7C7B60651927C3D26A596F34CA" xlink:to="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_C32D28AA8C8294C01870D26A596F38AE" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_OtherNonOperatingIncomeExpenseOther" xlink:label="loc_qlys_OtherNonOperatingIncomeExpenseOther_2669444003497C0608B9D26A596FD729" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OtherIncomeAndExpensesAbstract_891E4A7C7B60651927C3D26A596F34CA" xlink:to="loc_qlys_OtherNonOperatingIncomeExpenseOther_2669444003497C0608B9D26A596FD729" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_8E85BBE8F25C9688E02CD26A596F56C7" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OtherIncomeAndExpensesAbstract_891E4A7C7B60651927C3D26A596F34CA" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_8E85BBE8F25C9688E02CD26A596F56C7" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/OtherIncomeExpenseNetTables" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_OtherIncomeAndExpensesAbstract" xlink:label="loc_us-gaap_OtherIncomeAndExpensesAbstract_6C40D30316BD9C3D5D46DC229D394A48" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock_118D083C7E9F86AD425FDC229D3CD286" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_OtherIncomeAndExpensesAbstract_6C40D30316BD9C3D5D46DC229D394A48" xlink:to="loc_us-gaap_ScheduleOfOtherNonoperatingIncomeExpenseTableTextBlock_118D083C7E9F86AD425FDC229D3CD286" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/PropertyAndEquipment" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAbstract" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAbstract_81CC30BF937F887310EDDBD2C9D2BD65" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_7A70960C2FE265FDC92EDBD2C9D7C6B0" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentAbstract_81CC30BF937F887310EDDBD2C9D2BD65" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_7A70960C2FE265FDC92EDBD2C9D7C6B0" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/PropertyAndEquipmentDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAbstract" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAbstract_BA2D1585CD7EE740BEA0E13858994A5C" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_816C44570F6D44CCD0FEE138589930F1" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentAbstract_BA2D1585CD7EE740BEA0E13858994A5C" xlink:to="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_816C44570F6D44CCD0FEE138589930F1" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_477C0AD69381BCBD7373E1385899327C" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_816C44570F6D44CCD0FEE138589930F1" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_477C0AD69381BCBD7373E1385899327C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2967419A4F83CF72E419E1385899A46F" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_477C0AD69381BCBD7373E1385899327C" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2967419A4F83CF72E419E1385899A46F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ComputerEquipmentMember" xlink:label="loc_us-gaap_ComputerEquipmentMember_89356EF3F3F2F7294499E138589979DD" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2967419A4F83CF72E419E1385899A46F" xlink:to="loc_us-gaap_ComputerEquipmentMember_89356EF3F3F2F7294499E138589979DD" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SoftwareMember" xlink:label="loc_us-gaap_SoftwareMember_015182B193C82D2B1875E1385899B683" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2967419A4F83CF72E419E1385899A46F" xlink:to="loc_us-gaap_SoftwareMember_015182B193C82D2B1875E1385899B683" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FurnitureAndFixturesMember" xlink:label="loc_us-gaap_FurnitureAndFixturesMember_E2FF76C9D58EFE9A6F40E13858999748" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2967419A4F83CF72E419E1385899A46F" xlink:to="loc_us-gaap_FurnitureAndFixturesMember_E2FF76C9D58EFE9A6F40E13858999748" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_ScannerAppliancesMember" xlink:label="loc_qlys_ScannerAppliancesMember_43A2663499F8677F084CE1385899D929" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2967419A4F83CF72E419E1385899A46F" xlink:to="loc_qlys_ScannerAppliancesMember_43A2663499F8677F084CE1385899D929" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_ScannerApplicancesAndOtherComputerEquipmentSubjectToSubscriptionMember" xlink:label="loc_qlys_ScannerApplicancesAndOtherComputerEquipmentSubjectToSubscriptionMember_9CD62E653EE6E5136DD7E138589976A5" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_ScannerAppliancesMember_43A2663499F8677F084CE1385899D929" xlink:to="loc_qlys_ScannerApplicancesAndOtherComputerEquipmentSubjectToSubscriptionMember_9CD62E653EE6E5136DD7E138589976A5" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_ScannerAppliancesAndOtherComputerEquipmentNotPlacedInServiceMember" xlink:label="loc_qlys_ScannerAppliancesAndOtherComputerEquipmentNotPlacedInServiceMember_E0F45692DB0FF8755B82E1385899CD2F" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_ScannerApplicancesAndOtherComputerEquipmentSubjectToSubscriptionMember_9CD62E653EE6E5136DD7E138589976A5" xlink:to="loc_qlys_ScannerAppliancesAndOtherComputerEquipmentNotPlacedInServiceMember_E0F45692DB0FF8755B82E1385899CD2F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_LeaseholdImprovementsMember" xlink:label="loc_us-gaap_LeaseholdImprovementsMember_734536DB4DC0F7DE079EE1385899AA72" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2967419A4F83CF72E419E1385899A46F" xlink:to="loc_us-gaap_LeaseholdImprovementsMember_734536DB4DC0F7DE079EE1385899AA72" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_OtherFixedAssetsNotPlacedInServiceMember" xlink:label="loc_qlys_OtherFixedAssetsNotPlacedInServiceMember_789D52CCD1C2895E1A22E13858999B0C" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_2967419A4F83CF72E419E1385899A46F" xlink:to="loc_qlys_OtherFixedAssetsNotPlacedInServiceMember_789D52CCD1C2895E1A22E13858999B0C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_FC2CA99BED58723A20F2E1385899DE7D" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_816C44570F6D44CCD0FEE138589930F1" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentLineItems_FC2CA99BED58723A20F2E1385899DE7D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentGross_C76F4380ED3B0B1BB08BE1385899C796" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_FC2CA99BED58723A20F2E1385899DE7D" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentGross_C76F4380ED3B0B1BB08BE1385899C796" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_7AE04D35B14CFA143B86E13858990678" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_FC2CA99BED58723A20F2E1385899DE7D" xlink:to="loc_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_7AE04D35B14CFA143B86E13858990678" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_7FF13BEEDF2EE05F293AE13858996820" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_FC2CA99BED58723A20F2E1385899DE7D" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_7FF13BEEDF2EE05F293AE13858996820" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CapitalLeasedAssetsGross" xlink:label="loc_us-gaap_CapitalLeasedAssetsGross_028D7B2BA7FDB1DE6AE8E1385899CA2E" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_FC2CA99BED58723A20F2E1385899DE7D" xlink:to="loc_us-gaap_CapitalLeasedAssetsGross_028D7B2BA7FDB1DE6AE8E1385899CA2E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation" xlink:label="loc_us-gaap_CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation_FC93B15B1C46616119A0E1385899B2C1" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_FC2CA99BED58723A20F2E1385899DE7D" xlink:to="loc_us-gaap_CapitalLeasesLesseeBalanceSheetAssetsByMajorClassAccumulatedDeprecation_FC93B15B1C46616119A0E1385899B2C1" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_DepreciationAndAmortizationOfLeasedAsset" xlink:label="loc_qlys_DepreciationAndAmortizationOfLeasedAsset_A45B2938384A97F2FECDE13858992443" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_FC2CA99BED58723A20F2E1385899DE7D" xlink:to="loc_qlys_DepreciationAndAmortizationOfLeasedAsset_A45B2938384A97F2FECDE13858992443" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/PropertyAndEquipmentTables" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PropertyPlantAndEquipmentAbstract" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAbstract_99E4AF692A323B510D21DBD2C7CE8999" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTextBlock" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTextBlock_ACD4C2133F0253FA32E0DBD2C7CF5AFD" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentAbstract_99E4AF692A323B510D21DBD2C7CE8999" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentTextBlock_ACD4C2133F0253FA32E0DBD2C7CF5AFD" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/RestatementOfPreviouslyIssuedFinancialStatements" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AccountingChangesAndErrorCorrectionsAbstract" xlink:label="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_DFE19FE35726B70121D5DBD1248F38FD" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AccountingChangesAndErrorCorrectionsTextBlock" xlink:label="loc_us-gaap_AccountingChangesAndErrorCorrectionsTextBlock_3E4720E6B79CD99A512DDBD1248F401F" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_DFE19FE35726B70121D5DBD1248F38FD" xlink:to="loc_us-gaap_AccountingChangesAndErrorCorrectionsTextBlock_3E4720E6B79CD99A512DDBD1248F401F" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/RestatementOfPreviouslyIssuedFinancialStatementsDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AccountingChangesAndErrorCorrectionsAbstract" xlink:label="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_327C2EB50B7512879CF0DBD125569C3A" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable" xlink:label="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable_2A70B8E537D2993843C9DBD125573C87" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_327C2EB50B7512879CF0DBD125569C3A" xlink:to="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable_2A70B8E537D2993843C9DBD125573C87" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis_2314963FAD86DB6727E6DBD1255750EC" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable_2A70B8E537D2993843C9DBD125573C87" xlink:to="loc_us-gaap_StatementScenarioAxis_2314963FAD86DB6727E6DBD1255750EC" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_79D294ED233F2A418452DBD12557B647" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementScenarioAxis_2314963FAD86DB6727E6DBD1255750EC" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain_79D294ED233F2A418452DBD12557B647" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScenarioPreviouslyReportedMember" xlink:label="loc_us-gaap_ScenarioPreviouslyReportedMember_BF50A30B3AE32B362446DBD1255756A5" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScenarioUnspecifiedDomain_79D294ED233F2A418452DBD12557B647" xlink:to="loc_us-gaap_ScenarioPreviouslyReportedMember_BF50A30B3AE32B362446DBD1255756A5" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RestatementAdjustmentMember" xlink:label="loc_us-gaap_RestatementAdjustmentMember_B78E913680A43AC86E1CDBD125574AD2" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScenarioUnspecifiedDomain_79D294ED233F2A418452DBD12557B647" xlink:to="loc_us-gaap_RestatementAdjustmentMember_B78E913680A43AC86E1CDBD125574AD2" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems" xlink:label="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_9B078CF0B41072D794ABDBD125578AB9" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentRestatementTable_2A70B8E537D2993843C9DBD125573C87" xlink:to="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_9B078CF0B41072D794ABDBD125578AB9" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AccruedIncomeTaxesNoncurrent" xlink:label="loc_us-gaap_AccruedIncomeTaxesNoncurrent_5FACC8B874F9EAD69DD7DBD1255701BC" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_9B078CF0B41072D794ABDBD125578AB9" xlink:to="loc_us-gaap_AccruedIncomeTaxesNoncurrent_5FACC8B874F9EAD69DD7DBD1255701BC" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_CAF9D51EED87F616E8B3DBD12557C2A4" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ErrorCorrectionsAndPriorPeriodAdjustmentsRestatementLineItems_9B078CF0B41072D794ABDBD125578AB9" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_CAF9D51EED87F616E8B3DBD12557C2A4" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/RestatementOfPreviouslyIssuedFinancialStatementsTables" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AccountingChangesAndErrorCorrectionsAbstract" xlink:label="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_70AAAA06B5CFB223A54FD5DED9D02EEA" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentsTextBlock" xlink:label="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentsTextBlock_B3E5CC319203440D4A61D5DED9D0B56A" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AccountingChangesAndErrorCorrectionsAbstract_70AAAA06B5CFB223A54FD5DED9D02EEA" xlink:to="loc_us-gaap_ScheduleOfErrorCorrectionsAndPriorPeriodAdjustmentsTextBlock_B3E5CC319203440D4A61D5DED9D0B56A" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/SegmentInformationAndInformationAboutGeographicArea" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SegmentReportingAbstract" xlink:label="loc_us-gaap_SegmentReportingAbstract_E245653C293B4905202BDC03FFA5D2B6" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SegmentReportingDisclosureTextBlock" xlink:label="loc_us-gaap_SegmentReportingDisclosureTextBlock_E8EC1105EAA0DCA1C29EDC03FFA66099" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingAbstract_E245653C293B4905202BDC03FFA5D2B6" xlink:to="loc_us-gaap_SegmentReportingDisclosureTextBlock_E8EC1105EAA0DCA1C29EDC03FFA66099" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/SegmentInformationAndInformationAboutGeographicAreaDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SegmentReportingAbstract" xlink:label="loc_us-gaap_SegmentReportingAbstract_185A0A42A86F970BD213DC03FFCB03CB" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_55D06E43528E0B05C221DC03FFCC6793" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingAbstract_185A0A42A86F970BD213DC03FFCB03CB" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_55D06E43528E0B05C221DC03FFCC6793" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementGeographicalAxis" xlink:label="loc_us-gaap_StatementGeographicalAxis_EC7F796E0B4749DC3BC9DC03FFCC2B6E" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_55D06E43528E0B05C221DC03FFCC6793" xlink:to="loc_us-gaap_StatementGeographicalAxis_EC7F796E0B4749DC3BC9DC03FFCC2B6E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SegmentGeographicalDomain" xlink:label="loc_us-gaap_SegmentGeographicalDomain_992F39C683E4887CEAD4DC03FFCCB0C0" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementGeographicalAxis_EC7F796E0B4749DC3BC9DC03FFCC2B6E" xlink:to="loc_us-gaap_SegmentGeographicalDomain_992F39C683E4887CEAD4DC03FFCCB0C0" xlink:type="arc" />
    <loc xlink:href="http://xbrl.sec.gov/country/2012/country-2012-01-31.xsd#country_US" xlink:label="loc_country_US_EDFC9F84E3958BDEF7F3DC03FFCC9858" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentGeographicalDomain_992F39C683E4887CEAD4DC03FFCCB0C0" xlink:to="loc_country_US_EDFC9F84E3958BDEF7F3DC03FFCC9858" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SegmentGeographicalGroupsOfCountriesGroupOneMember" xlink:label="loc_us-gaap_SegmentGeographicalGroupsOfCountriesGroupOneMember_A1FA221DE6824E436C06DC03FFCC30DB" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentGeographicalDomain_992F39C683E4887CEAD4DC03FFCCB0C0" xlink:to="loc_us-gaap_SegmentGeographicalGroupsOfCountriesGroupOneMember_A1FA221DE6824E436C06DC03FFCC30DB" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SegmentReportingInformationLineItems" xlink:label="loc_us-gaap_SegmentReportingInformationLineItems_C456EBB5871B31EE74E9DC03FFCCEDB0" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_55D06E43528E0B05C221DC03FFCC6793" xlink:to="loc_us-gaap_SegmentReportingInformationLineItems_C456EBB5871B31EE74E9DC03FFCCEDB0" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_NumberOfOperatingSegments" xlink:label="loc_us-gaap_NumberOfOperatingSegments_3327F49F26F4570EA999DC03FFCCF78D" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_C456EBB5871B31EE74E9DC03FFCCEDB0" xlink:to="loc_us-gaap_NumberOfOperatingSegments_3327F49F26F4570EA999DC03FFCCF78D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_E7A3F528BDE360FCDCDADC03FFCC3A6D" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingInformationLineItems_C456EBB5871B31EE74E9DC03FFCCEDB0" xlink:to="loc_us-gaap_Revenues_E7A3F528BDE360FCDCDADC03FFCC3A6D" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/SegmentInformationAndInformationAboutGeographicAreaTables" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SegmentReportingAbstract" xlink:label="loc_us-gaap_SegmentReportingAbstract_F1AB6E81A5AB754AA297DC03FEEC6250" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock" xlink:label="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_1DAC2651E0D4E7179F9EDC03FEEC4BCD" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SegmentReportingAbstract_F1AB6E81A5AB754AA297DC03FEEC6250" xlink:to="loc_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_1DAC2651E0D4E7179F9EDC03FEEC4BCD" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/StockholdersEquity" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StockholdersEquityAbstract" xlink:label="loc_us-gaap_StockholdersEquityAbstract_4484058C09B5FFB69C34D768D8F0CD4C" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:label="loc_us-gaap_StockholdersEquityNoteDisclosureTextBlock_07B6F450702157510E41D768D8F0A348" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityAbstract_4484058C09B5FFB69C34D768D8F0CD4C" xlink:to="loc_us-gaap_StockholdersEquityNoteDisclosureTextBlock_07B6F450702157510E41D768D8F0A348" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/StockholdersEquityDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StockholdersEquityAbstract" xlink:label="loc_us-gaap_StockholdersEquityAbstract_D2D4AEA8FACDFDD5C7E0E64F1D75C87E" xlink:type="locator" />
    <loc xlink:href="qlys-20120930.xsd#qlys_StockholdersEquityTable" xlink:label="loc_qlys_StockholdersEquityTable_D8986D5A9ABA5D35393CE64F1D7675F4" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityAbstract_D2D4AEA8FACDFDD5C7E0E64F1D75C87E" xlink:to="loc_qlys_StockholdersEquityTable_D8986D5A9ABA5D35393CE64F1D7675F4" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_OfferingSourceAxis" xlink:label="loc_qlys_OfferingSourceAxis_9F4AEDD140E08FC648B3E64F1D778D67" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_StockholdersEquityTable_D8986D5A9ABA5D35393CE64F1D7675F4" xlink:to="loc_qlys_OfferingSourceAxis_9F4AEDD140E08FC648B3E64F1D778D67" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_OfferingSourceDomain" xlink:label="loc_qlys_OfferingSourceDomain_A8831751AEC5D817D3EDE64F1D77EA39" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_OfferingSourceAxis_9F4AEDD140E08FC648B3E64F1D778D67" xlink:to="loc_qlys_OfferingSourceDomain_A8831751AEC5D817D3EDE64F1D77EA39" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IPOMember" xlink:label="loc_us-gaap_IPOMember_FCE8DF0A6238F414F9FEE64F1D771C79" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_OfferingSourceDomain_A8831751AEC5D817D3EDE64F1D77EA39" xlink:to="loc_us-gaap_IPOMember_FCE8DF0A6238F414F9FEE64F1D771C79" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FinancingAxis" xlink:label="loc_us-gaap_FinancingAxis_31FB4615F1BBA23E8642E64F1D77B606" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_StockholdersEquityTable_D8986D5A9ABA5D35393CE64F1D7675F4" xlink:to="loc_us-gaap_FinancingAxis_31FB4615F1BBA23E8642E64F1D77B606" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FinancingDomain" xlink:label="loc_us-gaap_FinancingDomain_34F2A00488B5F176D1B2E64F1D777B5B" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FinancingAxis_31FB4615F1BBA23E8642E64F1D77B606" xlink:to="loc_us-gaap_FinancingDomain_34F2A00488B5F176D1B2E64F1D777B5B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IssuanceOfEquityMember" xlink:label="loc_us-gaap_IssuanceOfEquityMember_96D1C84A33103D3A4A46E64F1D779095" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FinancingDomain_34F2A00488B5F176D1B2E64F1D777B5B" xlink:to="loc_us-gaap_IssuanceOfEquityMember_96D1C84A33103D3A4A46E64F1D779095" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_79FC80FD92D5038A8DF0E64F1D777B25" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_StockholdersEquityTable_D8986D5A9ABA5D35393CE64F1D7675F4" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_79FC80FD92D5038A8DF0E64F1D777B25" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_272F2E10992B96F3F654E64F1D77430A" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_79FC80FD92D5038A8DF0E64F1D777B25" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_272F2E10992B96F3F654E64F1D77430A" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SubsequentEventMember" xlink:label="loc_us-gaap_SubsequentEventMember_5C7564AD44C522A38682E64F1D77A66F" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_272F2E10992B96F3F654E64F1D77430A" xlink:to="loc_us-gaap_SubsequentEventMember_5C7564AD44C522A38682E64F1D77A66F" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_06F28F9EFFEE43DD79A7E64F1D78158E" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_StockholdersEquityTable_D8986D5A9ABA5D35393CE64F1D7675F4" xlink:to="loc_us-gaap_StatementClassOfStockAxis_06F28F9EFFEE43DD79A7E64F1D78158E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_43CF905712C2641C13B3E64F1D782C5C" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementClassOfStockAxis_06F28F9EFFEE43DD79A7E64F1D78158E" xlink:to="loc_us-gaap_ClassOfStockDomain_43CF905712C2641C13B3E64F1D782C5C" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember_6E1D71BFC7E2428BF8C7E64F1D78F123" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_43CF905712C2641C13B3E64F1D782C5C" xlink:to="loc_us-gaap_CommonStockMember_6E1D71BFC7E2428BF8C7E64F1D78F123" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ConvertiblePreferredStockMember" xlink:label="loc_us-gaap_ConvertiblePreferredStockMember_24C58F27B1DAA9432E88E64F1D781BFB" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_43CF905712C2641C13B3E64F1D782C5C" xlink:to="loc_us-gaap_ConvertiblePreferredStockMember_24C58F27B1DAA9432E88E64F1D781BFB" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SeriesAPreferredStockMember" xlink:label="loc_us-gaap_SeriesAPreferredStockMember_5F51E9CFE7FBB5B3FD01E64F1D78BDF9" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ConvertiblePreferredStockMember_24C58F27B1DAA9432E88E64F1D781BFB" xlink:to="loc_us-gaap_SeriesAPreferredStockMember_5F51E9CFE7FBB5B3FD01E64F1D78BDF9" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SeriesBPreferredStockMember" xlink:label="loc_us-gaap_SeriesBPreferredStockMember_79DB9985B1B72D228D4EE64F1D78C5A5" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ConvertiblePreferredStockMember_24C58F27B1DAA9432E88E64F1D781BFB" xlink:to="loc_us-gaap_SeriesBPreferredStockMember_79DB9985B1B72D228D4EE64F1D78C5A5" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SeriesCPreferredStockMember" xlink:label="loc_us-gaap_SeriesCPreferredStockMember_A466B5EA3C168CBBE958E64F1D7820A5" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ConvertiblePreferredStockMember_24C58F27B1DAA9432E88E64F1D781BFB" xlink:to="loc_us-gaap_SeriesCPreferredStockMember_A466B5EA3C168CBBE958E64F1D7820A5" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis_6AFE1FFAF6616D8A7245E64F1D78A275" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_StockholdersEquityTable_D8986D5A9ABA5D35393CE64F1D7675F4" xlink:to="loc_us-gaap_StatementScenarioAxis_6AFE1FFAF6616D8A7245E64F1D78A275" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_9555DDF000FE654CF91AE64F1D789069" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementScenarioAxis_6AFE1FFAF6616D8A7245E64F1D78A275" xlink:to="loc_us-gaap_ScenarioUnspecifiedDomain_9555DDF000FE654CF91AE64F1D789069" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ProFormaMember" xlink:label="loc_us-gaap_ProFormaMember_302B8F18412768C6BA4BE64F1D786009" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ScenarioUnspecifiedDomain_9555DDF000FE654CF91AE64F1D789069" xlink:to="loc_us-gaap_ProFormaMember_302B8F18412768C6BA4BE64F1D786009" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_23B8B8AFCFC36ACCD5EFE64F1D78BCB3" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_StockholdersEquityTable_D8986D5A9ABA5D35393CE64F1D7675F4" xlink:to="loc_us-gaap_AwardTypeAxis_23B8B8AFCFC36ACCD5EFE64F1D78BCB3" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_27ED36E7D172D5597431E64F1D785993" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_AwardTypeAxis_23B8B8AFCFC36ACCD5EFE64F1D78BCB3" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_27ED36E7D172D5597431E64F1D785993" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StockOptionsMember" xlink:label="loc_us-gaap_StockOptionsMember_DC0006920B3EC5DA3FE2E64F1D7877A5" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_27ED36E7D172D5597431E64F1D785993" xlink:to="loc_us-gaap_StockOptionsMember_DC0006920B3EC5DA3FE2E64F1D7877A5" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_OtherEquityCompensationMember" xlink:label="loc_qlys_OtherEquityCompensationMember_6D069C2AD2904CEF2BA5E64F1D793519" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_27ED36E7D172D5597431E64F1D785993" xlink:to="loc_qlys_OtherEquityCompensationMember_6D069C2AD2904CEF2BA5E64F1D793519" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PlanNameAxis" xlink:label="loc_us-gaap_PlanNameAxis_24E69E6B2C1F3FFEE73CE64F1D796534" xlink:type="locator" />
    <presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_StockholdersEquityTable_D8986D5A9ABA5D35393CE64F1D7675F4" xlink:to="loc_us-gaap_PlanNameAxis_24E69E6B2C1F3FFEE73CE64F1D796534" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PlanNameDomain" xlink:label="loc_us-gaap_PlanNameDomain_8EC97702BB5AA36FDAB5E64F1D795FEF" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanNameAxis_24E69E6B2C1F3FFEE73CE64F1D796534" xlink:to="loc_us-gaap_PlanNameDomain_8EC97702BB5AA36FDAB5E64F1D795FEF" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_A2000EquityIncentivePlanMember" xlink:label="loc_qlys_A2000EquityIncentivePlanMember_E97356ED455FA5A6D1FCE64F1D79435D" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanNameDomain_8EC97702BB5AA36FDAB5E64F1D795FEF" xlink:to="loc_qlys_A2000EquityIncentivePlanMember_E97356ED455FA5A6D1FCE64F1D79435D" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_A2012EquityIncentivePlanMember" xlink:label="loc_qlys_A2012EquityIncentivePlanMember_4FD387692F9E957A216DE64F1D7954C1" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_PlanNameDomain_8EC97702BB5AA36FDAB5E64F1D795FEF" xlink:to="loc_qlys_A2012EquityIncentivePlanMember_4FD387692F9E957A216DE64F1D7954C1" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_StockholdersEquityLineItems" xlink:label="loc_qlys_StockholdersEquityLineItems_E0300029DEF55A10335FE64F1D790119" xlink:type="locator" />
    <presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_StockholdersEquityTable_D8986D5A9ABA5D35393CE64F1D7675F4" xlink:to="loc_qlys_StockholdersEquityLineItems_E0300029DEF55A10335FE64F1D790119" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_75215915616785655DFEE64F1D7972B9" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_StockholdersEquityLineItems_E0300029DEF55A10335FE64F1D790119" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_75215915616785655DFEE64F1D7972B9" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross_D3666256E76FDF9D01F8E64F1D79FCD1" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_StockholdersEquityLineItems_E0300029DEF55A10335FE64F1D790119" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensationGross_D3666256E76FDF9D01F8E64F1D79FCD1" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfUnvestedSharesRepurchased" xlink:label="loc_qlys_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfUnvestedSharesRepurchased_E52265336141E55EB525E64F1D7975A8" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_StockholdersEquityLineItems_E0300029DEF55A10335FE64F1D790119" xlink:to="loc_qlys_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfUnvestedSharesRepurchased_E52265336141E55EB525E64F1D7975A8" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_9A3E167305CA8BB3E4A0E64F1D7990FA" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_StockholdersEquityLineItems_E0300029DEF55A10335FE64F1D790119" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_9A3E167305CA8BB3E4A0E64F1D7990FA" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_C622579F33DD34AB3EEFE64F1D798A5E" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_StockholdersEquityLineItems_E0300029DEF55A10335FE64F1D790119" xlink:to="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_C622579F33DD34AB3EEFE64F1D798A5E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PreferredStockSharesOutstanding" xlink:label="loc_us-gaap_PreferredStockSharesOutstanding_5DFCBD5F555CF595B0ACE64F1D791689" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_StockholdersEquityLineItems_E0300029DEF55A10335FE64F1D790119" xlink:to="loc_us-gaap_PreferredStockSharesOutstanding_5DFCBD5F555CF595B0ACE64F1D791689" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" xlink:label="loc_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_BEBE8BD8618443C658F9E64F1D798E3B" xlink:type="locator" />
    <presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/totalLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_StockholdersEquityLineItems_E0300029DEF55A10335FE64F1D790119" xlink:to="loc_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance_BEBE8BD8618443C658F9E64F1D798E3B" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ConversionOfStockSharesConverted1" xlink:label="loc_us-gaap_ConversionOfStockSharesConverted1_690E36095A329F8EBC91E64F1D79273F" xlink:type="locator" />
    <presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_StockholdersEquityLineItems_E0300029DEF55A10335FE64F1D790119" xlink:to="loc_us-gaap_ConversionOfStockSharesConverted1_690E36095A329F8EBC91E64F1D79273F" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_CommonStockSharesOutstandingFullyDilutedBasis" xlink:label="loc_qlys_CommonStockSharesOutstandingFullyDilutedBasis_E40E0031A99EFCF2DEFCE64F1D796707" xlink:type="locator" />
    <presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_StockholdersEquityLineItems_E0300029DEF55A10335FE64F1D790119" xlink:to="loc_qlys_CommonStockSharesOutstandingFullyDilutedBasis_E40E0031A99EFCF2DEFCE64F1D796707" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PreferredStockSharesAuthorized" xlink:label="loc_us-gaap_PreferredStockSharesAuthorized_17A5102E05799E478DDDE64F1D7A23B3" xlink:type="locator" />
    <presentationArc order="10" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_StockholdersEquityLineItems_E0300029DEF55A10335FE64F1D790119" xlink:to="loc_us-gaap_PreferredStockSharesAuthorized_17A5102E05799E478DDDE64F1D7A23B3" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PreferredStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_PreferredStockParOrStatedValuePerShare_F9EAB970456815171E50E64F1D7A16A4" xlink:type="locator" />
    <presentationArc order="11" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_StockholdersEquityLineItems_E0300029DEF55A10335FE64F1D790119" xlink:to="loc_us-gaap_PreferredStockParOrStatedValuePerShare_F9EAB970456815171E50E64F1D7A16A4" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_StockIssuedDuringPeriodValueNewIssuesPricePerShare" xlink:label="loc_qlys_StockIssuedDuringPeriodValueNewIssuesPricePerShare_C8E36CB677063F662AD1E64F1D7ABCA4" xlink:type="locator" />
    <presentationArc order="12" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_StockholdersEquityLineItems_E0300029DEF55A10335FE64F1D790119" xlink:to="loc_qlys_StockIssuedDuringPeriodValueNewIssuesPricePerShare_C8E36CB677063F662AD1E64F1D7ABCA4" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ConvertiblePreferredStockSharesIssuedUponConversion" xlink:label="loc_us-gaap_ConvertiblePreferredStockSharesIssuedUponConversion_D96A47822D42F57A1C58E64F1D7A0689" xlink:type="locator" />
    <presentationArc order="13" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_StockholdersEquityLineItems_E0300029DEF55A10335FE64F1D790119" xlink:to="loc_us-gaap_ConvertiblePreferredStockSharesIssuedUponConversion_D96A47822D42F57A1C58E64F1D7A0689" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_ConvertiblePreferredStockConversionTriggerMinimumPricePerShareInPublicOffering" xlink:label="loc_qlys_ConvertiblePreferredStockConversionTriggerMinimumPricePerShareInPublicOffering_11C5175161BB21DAEE84E64F1D7A470E" xlink:type="locator" />
    <presentationArc order="14" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_StockholdersEquityLineItems_E0300029DEF55A10335FE64F1D790119" xlink:to="loc_qlys_ConvertiblePreferredStockConversionTriggerMinimumPricePerShareInPublicOffering_11C5175161BB21DAEE84E64F1D7A470E" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_ConvertiblePreferredStockConversionTriggerAggregatePublicOffering" xlink:label="loc_qlys_ConvertiblePreferredStockConversionTriggerAggregatePublicOffering_39B2E6B78B95198BE827E64F1D7A9B3E" xlink:type="locator" />
    <presentationArc order="15" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_StockholdersEquityLineItems_E0300029DEF55A10335FE64F1D790119" xlink:to="loc_qlys_ConvertiblePreferredStockConversionTriggerAggregatePublicOffering_39B2E6B78B95198BE827E64F1D7A9B3E" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/StockholdersEquityTables" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StockholdersEquityAbstract" xlink:label="loc_us-gaap_StockholdersEquityAbstract_7DA14583F5DF22EDF372DBE34C6BE1DB" xlink:type="locator" />
    <loc xlink:href="qlys-20120930.xsd#qlys_ScheduleOfSharesReservedForFutureIssuanceTableTextBlock" xlink:label="loc_qlys_ScheduleOfSharesReservedForFutureIssuanceTableTextBlock_F666E54703BC4974F01DDBE34C6B77DD" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StockholdersEquityAbstract_7DA14583F5DF22EDF372DBE34C6BE1DB" xlink:to="loc_qlys_ScheduleOfSharesReservedForFutureIssuanceTableTextBlock_F666E54703BC4974F01DDBE34C6B77DD" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/SubsequentEvents" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SubsequentEventsAbstract" xlink:label="loc_us-gaap_SubsequentEventsAbstract_77398B52CE3858E964FCDC0BAA3AF127" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SubsequentEventsTextBlock" xlink:label="loc_us-gaap_SubsequentEventsTextBlock_7927D49FB6F093A5D1CEDC0BAA3AC826" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SubsequentEventsAbstract_77398B52CE3858E964FCDC0BAA3AF127" xlink:to="loc_us-gaap_SubsequentEventsTextBlock_7927D49FB6F093A5D1CEDC0BAA3AC826" xlink:type="arc" />
  </presentationLink>
  <presentationLink xlink:role="http://www.qualys.com/role/SubsequentEventsDetails" xlink:type="extended">
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SubsequentEventsAbstract" xlink:label="loc_us-gaap_SubsequentEventsAbstract_0052F0D03C380E68CBB5DC22EBD2ABB8" xlink:type="locator" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SubsequentEventTable" xlink:label="loc_us-gaap_SubsequentEventTable_FE1C78C4EB6CEAE93ABFDC22EBD20EB8" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SubsequentEventsAbstract_0052F0D03C380E68CBB5DC22EBD2ABB8" xlink:to="loc_us-gaap_SubsequentEventTable_FE1C78C4EB6CEAE93ABFDC22EBD20EB8" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_OfferingSourceAxis" xlink:label="loc_qlys_OfferingSourceAxis_8354C33B0B347CF8FF1BDC22EBD26FE6" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SubsequentEventTable_FE1C78C4EB6CEAE93ABFDC22EBD20EB8" xlink:to="loc_qlys_OfferingSourceAxis_8354C33B0B347CF8FF1BDC22EBD26FE6" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_OfferingSourceDomain" xlink:label="loc_qlys_OfferingSourceDomain_C0C1E387F7F4CCA0B995DC22EBD2BD17" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_OfferingSourceAxis_8354C33B0B347CF8FF1BDC22EBD26FE6" xlink:to="loc_qlys_OfferingSourceDomain_C0C1E387F7F4CCA0B995DC22EBD2BD17" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IPOMember" xlink:label="loc_us-gaap_IPOMember_7C7AF44D10ED9CCF5577DC22EBD3E1D3" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_qlys_OfferingSourceDomain_C0C1E387F7F4CCA0B995DC22EBD2BD17" xlink:to="loc_us-gaap_IPOMember_7C7AF44D10ED9CCF5577DC22EBD3E1D3" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_IpoOverallotmentMember" xlink:label="loc_qlys_IpoOverallotmentMember_C450BB6F71C6EAE5DE32DC22EBD34D6E" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_IPOMember_7C7AF44D10ED9CCF5577DC22EBD3E1D3" xlink:to="loc_qlys_IpoOverallotmentMember_C450BB6F71C6EAE5DE32DC22EBD34D6E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_787C36B1360A5DD66906DC22EBD39FA6" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SubsequentEventTable_FE1C78C4EB6CEAE93ABFDC22EBD20EB8" xlink:to="loc_us-gaap_StatementClassOfStockAxis_787C36B1360A5DD66906DC22EBD39FA6" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_DD7AF6412EEB03757E3EDC22EBD31B7D" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_StatementClassOfStockAxis_787C36B1360A5DD66906DC22EBD39FA6" xlink:to="loc_us-gaap_ClassOfStockDomain_DD7AF6412EEB03757E3EDC22EBD31B7D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember_02A8438C3DC220460EA3DC22EBD35ACE" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_DD7AF6412EEB03757E3EDC22EBD31B7D" xlink:to="loc_us-gaap_CommonStockMember_02A8438C3DC220460EA3DC22EBD35ACE" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ConvertiblePreferredStockMember" xlink:label="loc_us-gaap_ConvertiblePreferredStockMember_9C08BC61A5D8FEEB53F2DC22EBD3B306" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_ClassOfStockDomain_DD7AF6412EEB03757E3EDC22EBD31B7D" xlink:to="loc_us-gaap_ConvertiblePreferredStockMember_9C08BC61A5D8FEEB53F2DC22EBD3B306" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FinancingAxis" xlink:label="loc_us-gaap_FinancingAxis_28F6E8B6E63A719FD9FEDC22EBD33250" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SubsequentEventTable_FE1C78C4EB6CEAE93ABFDC22EBD20EB8" xlink:to="loc_us-gaap_FinancingAxis_28F6E8B6E63A719FD9FEDC22EBD33250" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_FinancingDomain" xlink:label="loc_us-gaap_FinancingDomain_5E77096B847710A38730DC22EBD370D9" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FinancingAxis_28F6E8B6E63A719FD9FEDC22EBD33250" xlink:to="loc_us-gaap_FinancingDomain_5E77096B847710A38730DC22EBD370D9" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_IssuanceOfEquityMember" xlink:label="loc_us-gaap_IssuanceOfEquityMember_2EC448AD4D75EEB98EE0DC22EBD3A2C6" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_FinancingDomain_5E77096B847710A38730DC22EBD370D9" xlink:to="loc_us-gaap_IssuanceOfEquityMember_2EC448AD4D75EEB98EE0DC22EBD3A2C6" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_3C3CFB9F03688FF488F1DC22EBD3532E" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SubsequentEventTable_FE1C78C4EB6CEAE93ABFDC22EBD20EB8" xlink:to="loc_us-gaap_SubsequentEventTypeAxis_3C3CFB9F03688FF488F1DC22EBD3532E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_12582C580340872B353ADC22EBD37EA2" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_3C3CFB9F03688FF488F1DC22EBD3532E" xlink:to="loc_us-gaap_SubsequentEventTypeDomain_12582C580340872B353ADC22EBD37EA2" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SubsequentEventMember" xlink:label="loc_us-gaap_SubsequentEventMember_299FC6A4E0FA70096E92DC22EBD3D5C5" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_12582C580340872B353ADC22EBD37EA2" xlink:to="loc_us-gaap_SubsequentEventMember_299FC6A4E0FA70096E92DC22EBD3D5C5" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_SubsequentEventLineItems" xlink:label="loc_us-gaap_SubsequentEventLineItems_6F24FB7BFB4631A39334DC22EBD4A0E7" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SubsequentEventTable_FE1C78C4EB6CEAE93ABFDC22EBD20EB8" xlink:to="loc_us-gaap_SubsequentEventLineItems_6F24FB7BFB4631A39334DC22EBD4A0E7" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_SharesSoldInInitialPublicOfferingIncludingExistingShares" xlink:label="loc_qlys_SharesSoldInInitialPublicOfferingIncludingExistingShares_63061BA7E82BC5F8DD9FDC22EBD4F162" xlink:type="locator" />
    <presentationArc order="1" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SubsequentEventLineItems_6F24FB7BFB4631A39334DC22EBD4A0E7" xlink:to="loc_qlys_SharesSoldInInitialPublicOfferingIncludingExistingShares_63061BA7E82BC5F8DD9FDC22EBD4F162" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_SharesSoldInInitialPublicOfferingIncludingExistingSharesPricePerShare" xlink:label="loc_qlys_SharesSoldInInitialPublicOfferingIncludingExistingSharesPricePerShare_757ECDEAB7B372028C63DC22EBD4CF5A" xlink:type="locator" />
    <presentationArc order="2" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SubsequentEventLineItems_6F24FB7BFB4631A39334DC22EBD4A0E7" xlink:to="loc_qlys_SharesSoldInInitialPublicOfferingIncludingExistingSharesPricePerShare_757ECDEAB7B372028C63DC22EBD4CF5A" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_C02ACC769140BC035315DC22EBD43DBD" xlink:type="locator" />
    <presentationArc order="3" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SubsequentEventLineItems_6F24FB7BFB4631A39334DC22EBD4A0E7" xlink:to="loc_us-gaap_StockIssuedDuringPeriodSharesNewIssues_C02ACC769140BC035315DC22EBD43DBD" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_SharesSoldByExistingStockholdersDuringInitialPublicOffering" xlink:label="loc_qlys_SharesSoldByExistingStockholdersDuringInitialPublicOffering_C09121D8BA73942A9A1ADC22EBD4CA8D" xlink:type="locator" />
    <presentationArc order="4" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SubsequentEventLineItems_6F24FB7BFB4631A39334DC22EBD4A0E7" xlink:to="loc_qlys_SharesSoldByExistingStockholdersDuringInitialPublicOffering_C09121D8BA73942A9A1ADC22EBD4CA8D" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ProceedsFromIssuanceInitialPublicOffering" xlink:label="loc_us-gaap_ProceedsFromIssuanceInitialPublicOffering_C564BF7B40F8A57F2CCADC22EBD46A15" xlink:type="locator" />
    <presentationArc order="5" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SubsequentEventLineItems_6F24FB7BFB4631A39334DC22EBD4A0E7" xlink:to="loc_us-gaap_ProceedsFromIssuanceInitialPublicOffering_C564BF7B40F8A57F2CCADC22EBD46A15" xlink:type="arc" />
    <loc xlink:href="qlys-20120930.xsd#qlys_SaleOfStockExpensesIncurredInOffering" xlink:label="loc_qlys_SaleOfStockExpensesIncurredInOffering_55564A79D845F4F01227DC22EBD4D188" xlink:type="locator" />
    <presentationArc order="6" preferredLabel="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SubsequentEventLineItems_6F24FB7BFB4631A39334DC22EBD4A0E7" xlink:to="loc_qlys_SaleOfStockExpensesIncurredInOffering_55564A79D845F4F01227DC22EBD4D188" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_ConversionOfStockSharesConverted1" xlink:label="loc_us-gaap_ConversionOfStockSharesConverted1_450F491F6F783D22274FDC22EBD4311E" xlink:type="locator" />
    <presentationArc order="7" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SubsequentEventLineItems_6F24FB7BFB4631A39334DC22EBD4A0E7" xlink:to="loc_us-gaap_ConversionOfStockSharesConverted1_450F491F6F783D22274FDC22EBD4311E" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_63BBC4E23FE6911DFBCBDC22EBD44376" xlink:type="locator" />
    <presentationArc order="8" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SubsequentEventLineItems_6F24FB7BFB4631A39334DC22EBD4A0E7" xlink:to="loc_us-gaap_CommonStockSharesAuthorized_63BBC4E23FE6911DFBCBDC22EBD44376" xlink:type="arc" />
    <loc xlink:href="http://xbrl.fasb.org/us-gaap/2012/elts/us-gaap-2012-01-31.xsd#us-gaap_PreferredStockSharesAuthorized" xlink:label="loc_us-gaap_PreferredStockSharesAuthorized_FBC683579206D059001DDC22EBD589EE" xlink:type="locator" />
    <presentationArc order="9" preferredLabel="http://www.xbrl.org/2003/role/verboseLabel" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="loc_us-gaap_SubsequentEventLineItems_6F24FB7BFB4631A39334DC22EBD4A0E7" xlink:to="loc_us-gaap_PreferredStockSharesAuthorized_FBC683579206D059001DDC22EBD589EE" xlink:type="arc" />
  </presentationLink>
</linkbase>
</XBRL>
