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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 TaVQ1t7h3fUivVbD/0Q1dq1GD4SRnIMGkMOLuTNtpL9LQPjWQ7MP4tekZi4+Rfzg
 nruPGFndhFJyuaTyLTmbeg==

<SEC-DOCUMENT>0001182821-05-000001.txt : 20050408
<SEC-HEADER>0001182821-05-000001.hdr.sgml : 20050408
<ACCEPTANCE-DATETIME>20050408172610
ACCESSION NUMBER:		0001182821-05-000001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20050408
FILED AS OF DATE:		20050408
DATE AS OF CHANGE:		20050408

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ASCENTIAL SOFTWARE CORP
		CENTRAL INDEX KEY:			0000799089
		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-PREPACKAGED SOFTWARE [7372]
		IRS NUMBER:				943011736
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		50 WASHINGTON STREET
		CITY:			WESTBOROUGH
		STATE:			MA
		ZIP:			01581
		BUSINESS PHONE:		5083663888

	MAIL ADDRESS:	
		STREET 1:		50 WASHINGTON STREET
		CITY:			WESTBOROUGH
		STATE:			MA
		ZIP:			01581

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	INFORMIX CORP
		DATE OF NAME CHANGE:	19920703

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			MORRILL ROBERT M
		CENTRAL INDEX KEY:			0001182821

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-15325
		FILM NUMBER:		05742338

	BUSINESS ADDRESS:	
		STREET 1:		50 WASHINGTON ST
		STREET 2:		C/O ASCENTIAL SOFTWARE CORPORATE
		CITY:			WESTBOROUGH
		STATE:			MA
		ZIP:			015811021
		BUSINESS PHONE:		5083663888

	MAIL ADDRESS:	
		STREET 1:		ASCENTIAL SOFTWARE CORPORATE
		STREET 2:		50 WASHINGTON ST
		CITY:			WESTBOROUGH
		STATE:			MA
		ZIP:			015811021
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>edgar.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2005-04-08</periodOfReport>

    <issuer>
        <issuerCik>0000799089</issuerCik>
        <issuerName>ASCENTIAL SOFTWARE CORP</issuerName>
        <issuerTradingSymbol>ASCL</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001182821</rptOwnerCik>
            <rptOwnerName>MORRILL ROBERT M</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ASCENTIAL SOFTWARE CORPORATION</rptOwnerStreet1>
            <rptOwnerStreet2>50 WASHINGTON STREET</rptOwnerStreet2>
            <rptOwnerCity>WESTBOROUGH</rptOwnerCity>
            <rptOwnerState>MA</rptOwnerState>
            <rptOwnerZipCode>01581</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>2005-04-08</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>G</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>16300</value>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>62809</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By trust</value>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Represents shares donated as a gift to a charitable organization.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Barbara A. Dirsa, by power of attorney</signatureName>
        <signatureDate>2005-04-08</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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