<?xml version="1.0"?><ownershipDocument><schemaVersion>X0201</schemaVersion>    <documentType>4</documentType><periodOfReport>2003-10-31</periodOfReport><notSubjectToSection16>0</notSubjectToSection16><issuer><issuerCik>0001035656</issuerCik><issuerName>PLUMTREE SOFTWARE INC</issuerName>        <issuerTradingSymbol>PLUM</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001195043</rptOwnerCik><rptOwnerName>DOLASIA RUPEN</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1>ONE BUSH STREET</rptOwnerStreet1><rptOwnerStreet2></rptOwnerStreet2><rptOwnerCity>SAN FRANCISCO</rptOwnerCity><rptOwnerState>CA</rptOwnerState><rptOwnerZipCode>94104</rptOwnerZipCode><rptOwnerStateDescription></rptOwnerStateDescription></reportingOwnerAddress><reportingOwnerRelationship><isDirector>1</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther></reportingOwnerRelationship></reportingOwner><nonDerivativeTable><nonDerivativeTransaction><securityTitle><value>Common Stock</value></securityTitle><transactionDate><value>2003-10-31</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>S</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>13000</value><footnoteId id="F1" /></transactionShares><transactionPricePerShare><value>5.5</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>2212675</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>I</value></directOrIndirectOwnership><natureOfOwnership><value>by general partnership</value></natureOfOwnership></ownershipNature></nonDerivativeTransaction></nonDerivativeTable><footnotes><footnote id="F1">Held by H&amp;Q Plumtree Investors, L.P.  The Reporting Person is a general partner and disclaims benefical ownership to the extent of his pencuniary interest.</footnote></footnotes><remarks></remarks><ownerSignature><signatureName>/s/ Diohonne Beltramo, Attorney-in-Fact</signatureName><signatureDate>2003-11-04</signatureDate></ownerSignature></ownershipDocument>

