<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2017-03-20</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001112920</issuerCik>
        <issuerName>GLOBALSCAPE INC</issuerName>
        <issuerTradingSymbol>GSB</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001694779</rptOwnerCik>
            <rptOwnerName>210/GSB Acquisition Partners, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>8214 WESTCHESTER DRIVE, SUITE 950</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75225</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001694780</rptOwnerCik>
            <rptOwnerName>210 Capital, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>8214 WESTCHESTER DRIVE, SUITE 950</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75225</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001274195</rptOwnerCik>
            <rptOwnerName>COVENANT RHA PARTNERS, L.P.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>8214 WESTCHESTER DRIVE, SUITE 950</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75225</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001694778</rptOwnerCik>
            <rptOwnerName>CCW/LAW Holdings, LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>8214 WESTCHESTER DRIVE, SUITE 950</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75225</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001694781</rptOwnerCik>
            <rptOwnerName>RHA Investments, Inc.</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>8214 WESTCHESTER DRIVE, SUITE 950</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75225</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001694574</rptOwnerCik>
            <rptOwnerName>Alpert Robert H</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>8214 WESTCHESTER DRIVE, SUITE 950</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75225</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001694507</rptOwnerCik>
            <rptOwnerName>Webb C Clark</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>8214 WESTCHESTER DRIVE, SUITE 950</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75225</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>1</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2017-03-20</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>43500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.839</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3318300</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F5"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2017-03-21</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>P</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>8500</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>3.839</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>3326800</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                    <footnoteId id="F5"/>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>231507</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By C. Clark Webb</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F3"/>
                    <footnoteId id="F5"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
        <nonDerivativeHolding>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>231500</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>By Atlas Capital Management, L.P.</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F4"/>
                    <footnoteId id="F5"/>
                </natureOfOwnership>
            </ownershipNature>
        </nonDerivativeHolding>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">This Form 4 is being filed by (i) 210/GSB Acquisition Partners, LLC (&quot;GSB Acquisition&quot;), in its capacity as a direct holder of 3,326,800 shares of common stock of GlobalSCAPE, Inc. (the &quot;Issuer&quot;), (ii) 210 Capital, LLC (&quot;210 Capital&quot;), in its capacity as sole member of GSB Acquisition, (iii) Covenant RHA Partners, L.P. (&quot;RHA Partners&quot;), in its capacity as a member of 210 Capital, (iv) CCW/LAW Holdings, LLC (&quot;CCW Holdings&quot;), in its capacity as a member of 210 Capital, (v) C. Clark Webb, in his capacity as sole member of CCW Holdings and as a direct holder of 231,507 shares of the Issuer's common stock, (vi) RHA Investments, Inc. (&quot;RHA Investments&quot;), in its capacity as general partner of RHA Partners, and (vii) Robert H. Alpert, in his capacity as President and sole shareholder of RHA Investments (collectively, the &quot;Reporting Persons&quot;).</footnote>
        <footnote id="F2">These shares of the Issuer's common stock are held directly by GSB Acquisition. The Reporting Persons, other than GSB Acquisition, disclaim beneficial ownership of these shares of the Issuer's common stock and the filing of this Form 4 shall not be construed as an admission that such persons are beneficial owners of these shares of the Issuer's common stock.</footnote>
        <footnote id="F3">These shares of the Issuer's common stock are held directly by Mr. Webb. The Reporting Persons, other than Mr. Webb, disclaim beneficial ownership of these shares of the Issuer's common stock and the filing of this Form 4 shall not be construed as an admission that such persons are beneficial owners of these shares of the Issuer's common stock.</footnote>
        <footnote id="F4">These shares of the Issuer's common stock are held directly by Atlas Capital Management, L.P. (&quot;ACM&quot;). RHA Investments is the general partner of ACM and has the power to direct ACM's affairs, and as President and sole shareholder of RHA Investments, Mr. Alpert has the power to direct RHA Investments' affairs. The Reporting Persons disclaim beneficial ownership of these shares of the Issuer's common stock and the filing of this Form 4 shall not be construed as an admission that such persons are beneficial owners of these shares of the Issuer's common stock.</footnote>
        <footnote id="F5">The principal business address of each of the Reporting Persons is 8214 Westchester Drive, Suite 950, Dallas, Texas 75225.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>210/GSB ACQUISITION PARTNERS, LLC, By: 210 Capital, LLC, Its: Sole Member, By: Covenant RHA Partners, L.P., Its: Member, By: /s/ Robert H. Alpert, Its: Authorized Signatory, By: CCW/LAW Holdings, LLC, Its: Member, By: /s/ C. Clark Webb, Its: Auth. Sig</signatureName>
        <signatureDate>2017-03-22</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>210 CAPITAL, LLC, By: Covenant RHA Partners, L.P., Its:	Member, By: /s/ Robert H. Alpert, Its:	Authorized Signatory, By: CCW/LAW Holdings, LLC, Its: Member, By: /s/ C. Clark Webb, Its: Authorized Signatory</signatureName>
        <signatureDate>2017-03-22</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>COVENANT RHA PARTNERS, L.P., By: /s/ Robert H. Alpert, Its: Authorized Signatory</signatureName>
        <signatureDate>2017-03-22</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>CCW/LAW HOLDINGS, LLC, By: /s/ C. Clark Webb, Its: Authorized Signatory</signatureName>
        <signatureDate>2017-03-22</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>RHA INVESTMENTS, INC., By: /s/ Robert H. Alpert, Title: President</signatureName>
        <signatureDate>2017-03-22</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>ROBERT H. ALPERT, By: /s/ Robert H. Alpert</signatureName>
        <signatureDate>2017-03-22</signatureDate>
    </ownerSignature>

    <ownerSignature>
        <signatureName>C. CLARK WEBB, By: /s/ C. Clark Webb</signatureName>
        <signatureDate>2017-03-22</signatureDate>
    </ownerSignature>
</ownershipDocument>
