Document:

<PAGE>

                                                                   EXHIBIT 10.11

     THIS WARRANT AND THE SHARES ISSUABLE HEREUNDER HAVE NOT BEEN REGISTERED
UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED, OR
OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT
OR PURSUANT TO RULE 144 OR AN OPINION OF COUNSEL REASONABLY SATISFACTORY TO THE
CORPORATION AND ITS COUNSEL, THAT SUCH REGISTRATION IS NOT REQUIRED.

                              WARRANT TO PURCHASE STOCK

Corporation:               HAHT SOFTWARE, INC.
Number of Shares:          125,000
Class of Stock:            Series E Preferred
Initial Exercise Price:    See below
Issue Date:                August 31, 1999
Expiration Date:           August 31, 2006

     THIS WARRANT CERTIFIES THAT, in consideration of the payment of $1.00, the
receipt of which is hereby acknowledged, SILICON VALLEY BANK ("Holder") is
entitled to purchase the number of fully paid and nonassessable shares of the
Class of Stock (the "Shares") of the corporation (the "Company") at the initial
exercise price per Share (the "Warrant Price") all as set forth herein and as
adjusted pursuant to Article 2 of this Warrant, subject to the provisions and
upon the terms and conditions set forth in this Warrant. The Warrant Price shall
be equal to the price per share at which the Company sells its Series E
Preferred Stock in a bona fide issuance of stock to venture capital investors
(the "Next Round").  Notwithstanding the foregoing, if the Next Round does not
occur by March 31, 2000 or if an Acquisition occurs before March 31, 2000, then,
at the option of Holder, the Shares shall be Common Stock and the Warrant Price
shall be the price at which the Company's Series D Preferred Stock was last sold
immediately prior to the Issue Date.

     If any amount is outstanding under the Loan and Security Agreement among
the Company, Holder and Silicon Valley Bank dated as of the Issue Date (the
"Loan Agreement") after the Maturity Date, as defined in the Loan Agreement,
Holder may purchase an additional 7,200 Shares hereunder on the day after the
Maturity Date, and an additional 7,200 Shares for each 15-day period from and
including the day immediately after the Maturity Date that any amount remains
outstanding under the Loan Agreement.

ARTICLE 1. EXERCISE.

          1.1. Method of Exercise. Holder may exercise this Warrant by
               ------------------
delivering a duly executed Notice of Exercise in substantially the form attached
as Appendix 1 to the principal office of the Company. Unless Holder is
exercising the conversion right set forth in Section 1.2, Holder shall also
deliver to the Company a check for the aggregate Warrant Price for the Shares
being purchased.

          1.2. Conversion Right. In lieu of exercising this Warrant as specified
               ----------------
in Section 1.1, Holder may from time to time convert this Warrant, in whole or
in part, into a number of Shares determined by dividing (a) the aggregate fair
market value of the Shares or other securities otherwise issuable upon exercise
of this Warrant minus the aggregate Warrant Price of such Shares by (b) the fair
market value of one Share. The fair market value of the Shares shall be
determined pursuant to Section 1.4.

          1.3. No Rights of Shareholder. This Warrant does not entitle Holder to
               ------------------------
any voting rights as a shareholder of the Company prior to the exercise hereof.

          1.4. Fair Market Value. If the Shares are traded in a public market,
               -----------------
the fair market value of the Shares shall be the average of the closing price of
the Shares (or the closing price of the Company's stock into which the Shares
are convertible) reported for the business day immediately before Holder
delivers its Notice of Exercise to the Company. If the Shares are not traded in
a public market, the Board of Directors of the Company

                                       1
<PAGE>

shall determine fair market value in its reasonable good faith judgment. The
foregoing notwithstanding, if Holder advises the Board of Directors in writing
that Holder disagrees with such determination, then the Company and Holder shall
promptly agree upon a reputable investment banking firm to undertake such
valuation. If the valuation of such investment banking firm is more than ten
percent (10%) greater than that determined by the Board of Directors, then all
fees and expenses of such investment banking firm shall be paid by the Company.
In all other circumstances, such fees and expenses shall be paid by Holder.

          1.5. Delivery of Certificate and New Warrant.  Promptly after Holder
               ---------------------------------------
exercises or converts this Warrant, the Company shall deliver to Holder
certificates for the Shares acquired and, if this Warrant has not been fully
exercised or converted and has not expired, a new Warrant representing the
Shares not so acquired shall be delivered to Holder.

          1.6. Replacement of Warrants.  On receipt of evidence reasonably
               -----------------------
satisfactory to the Company of the loss, theft, destruction or mutilation of
this Warrant and, in the case of loss, theft or destruction, on delivery of an
indemnity agreement reasonably satisfactory in form and amount to the Company
or, in the case of mutilation, or surrender and cancellation of this Warrant,
the Company at its expense shall execute and deliver, in lieu of this Warrant, a
new warrant of like tenor.

          1.7. Repurchase on Sale, Merger, or Consolidation of the Company. For
               -----------------------------------------------------------
the purpose of this Warrant, "Acquisition" means any sale, license, or other
disposition of all or substantially all of the assets of the Company, or any
reorganization, consolidation, or merger of the Company where the holders of the
Company's securities before the transaction beneficially own less than 50% of
the outstanding voting securities of the surviving entity after the transaction.
Upon the closing of any Acquisition the successor entity shall assume the
obligations of this Warrant, and this Warrant shall be exercisable for the same
securities, cash, and property as would be payable for the Shares issuable upon
the exercise of the unexercised portion of this Warrant as if such Shares were
outstanding on the record date for the Acquisition and subsequent closing. The
Warrant Price shall be adjusted accordingly. Notwithstanding the foregoing, at
the election of Holder, the Company shall purchase the unexercised portion of
this Warrant for cash upon the closing of any Acquisition for an amount equal to
(a) the fair market value of any consideration that would have been received by
Holder in consideration of the Shares had Holder exercised the unexercised
portion of this Warrant immediately before the record date for determining the
shareholders entitled to participate in the proceeds of the Acquisition, less
(b) the aggregate Warrant Price of the Shares.

ARTICLE 2. ADJUSTMENTS TO THE SHARES.

          2.1. Stock Dividends, Splits, Etc.   If the Company declares or pays a
               ----------------------------
dividend on its common stock payable in common stock or other securities, or
subdivides the outstanding common stock into a greater amount of common stock,
then upon exercise of this Warrant, for each Share acquired, Holder shall
receive, without cost to Holder, the total number and kind of securities to
which Holder would have been entitled had Holder owned the Shares of record as
of the date the dividend or subdivision occurred.

          2.2. Reclassification, Exchange or Substitution.  Upon any
               ------------------------------------------
reclassification, exchange, substitution, or other event that results in a
change of the number and/or class of the securities issuable upon exercise or
conversion of this Warrant, Holder shall be entitled to receive, upon exercise
or conversion of this Warrant, the number and kind of securities and property
that Holder would have received for the Shares if this Warrant had been
exercised immediately before such reclassification, exchange, substitution, or
other event.  Such an event shall include any automatic conversion of the
outstanding or issuable securities of the Company of the same class or series as
the Shares to common stock pursuant to the terms of the Company's Articles of
Incorporation upon the closing of a registered public offering of the Company's
common stock.  The Company or its successor shall promptly issue to Holder a new
Warrant for such new securities or other property.  The new Warrant shall
provide for adjustments which shall be as nearly equivalent as may be
practicable to the adjustments provided for in this Article 2 including, without
limitation, adjustments to the Warrant Price and to the number of securities or
property issuable upon exercise of the new Warrant.  The provisions of this
Section 2.2 shall similarly apply to successive reclassifications, exchanges,
substitutions, or other events.

                                       2
<PAGE>

          2.3. Adjustments for Combinations, Etc.  If the outstanding Shares are
               ---------------------------------
combined or consolidated, by reclassification or otherwise, into a lesser number
of shares, the Warrant Price shall be proportionately increased.

          2.4. Price Adjustment.  If the Company issues additional common shares
               ----------------
(including shares of common stock ultimately issuable upon conversion of a
security convertible into common stock) after the date of the Warrant and the
consideration per additional common share is less than the Warrant Price in
effect immediately before such issue, the price at which the Shares are
converted to common stock if the Shares are Preferred Stock shall be adjusted in
accordance with the treatment of Series E Preferred Stock under the Company's
Articles of Incorporation in effect on the Issue Date.

          2.5. No Impairment.  The Company shall not, by amendment of its
               -------------
Articles of Incorporation or through a reorganization, transfer of assets,
consolidation, merger, dissolution, issue, or sale of securities or any other
voluntary action, avoid or seek to avoid the observance or performance of any of
the terms to be observed or performed under this Warrant by the Company, but
shall at all times in good faith assist in carrying out of all the provisions of
this Article 2 and in taking all such action as may be necessary or appropriate
to protect Holder's rights under this Article against impairment.

          2.6. Fractional Shares.  No fractional Shares shall be issuable upon
               -----------------
exercise or conversion of the Warrant and the number of Shares to be issued
shall be rounded down to the nearest whole Share. If a fractional share interest
arises upon any exercise or conversion of the Warrant, the Company shall
eliminate such fractional share interest by paying Holder amount computed by
multiplying the fractional interest by the fair market value of a full Share.

          2.7. Certificate as to Adjustments.  Upon each adjustment of the
               -----------------------------
Warrant Price, the Company at its expense shall promptly compute such
adjustment, and furnish Holder with a certificate of its Chief Financial Officer
or other officers of the corporation setting forth such adjustment and the facts
upon which such adjustment is based.  The Company shall, upon written request,
furnish Holder a certificate setting forth the Warrant Price in effect upon the
date thereof and the series of adjustments leading to such Warrant Price.

ARTICLE 3. REPRESENTATIONS AND COVENANTS OF THE COMPANY.

          3.1. Representations and Warranties. The Company hereby represents and
               ------------------------------
warrants to the Holder that all Shares which may be issued upon the exercise of
the purchase right represented by this Warrant, and all securities, if any,
issuable upon conversion of the Shares, shall, upon issuance, be duly
authorized, validly issued, fully paid and nonassessable, and free of any liens
and encumbrances except for restrictions on transfer provided for herein or
under applicable federal and state securities laws. The Company shall at all
times reserve a sufficient number of Shares and of shares of common stock for
issuance upon Holder's exercise of its rights hereunder and conversion of the
Shares.

          3.2. Notice of Certain Events.  If the Company proposes at any time
               ------------------------
(a) to declare any dividend or distribution upon its common stock, whether in
cash, property, stock, or other securities and whether or not a regular cash
dividend; (b) to offer for subscription pro rata to the holders of any class or
series of its stock any additional shares of stock of any class or series or
other rights; (c) to effect any reclassification or recapitalization of common
stock; (d) to merge or consolidate with or into any other corporation, or sell,
lease, license, or convey all or substantially all of its assets, or to
liquidate, dissolve or wind up; or (e) offer holders of registration rights the
opportunity to participate in an underwritten public offering of the company's
securities for cash, then, in connection with each such event, the Company shall
give Holder (1) at least 30 days prior written notice of the date on which a
record will be taken for such dividend, distribution, or subscription rights
(and specifying the date on which the holders of common stock will be entitled
thereto) or for determining rights to vote, if any, in respect of the matters
referred to in (c) and (d) above; (2) in the case of the matters referred to in
(c) and (d) above at least 30 days prior written notice of the date when the
same will take place (and specifying the date on which the holders of common
stock will be entitled to exchange their common stock for securities or other
property deliverable upon the occurrence of such event); and (3) in the case of
the matter referred to in (e) above, the same notice as is given to the holders
of such registration rights.

                                       3
<PAGE>

          3.3. Information Rights.  So long as the Holder holds this
               ------------------
Warrant and/or any of the Shares, the Company shall deliver to the Holder (a)
promptly after mailing, copies of all notices or other written communications to
the shareholders of the Company, (b) within ninety (90) days after the end of
each fiscal year of the Company, an accountant-reviewed year end financial
statement and certified by an Officer of the Company and (c) within thirty (30)
days after the end of each fiscal quarter, Company-prepared quarterly financial
statements.

          3.4. Registration Under Securities Act of 1933, as amended. The
               -----------------------------------------------------
Company hereby grants to Holder the same piggyback registration rights granted
to the purchasers of the Series E Preferred Stock, or Series D Preferred Stock,
if the Shares are Common Stock, subject to the same restrictions and
limitations, including cutbacks and market-standoff provisions, of the
purchasers of the Series E Preferred Stock, or Series D Preferred Stock, if the
Shares are Common Stock.

ARTICLE 4. MISCELLANEOUS.

          4.1. Term. This Warrant is exercisable, in whole or in part, at any
               ----
time and from time to time on or before the Expiration Date set forth above.

          4.2. Legends.  This Warrant and the Shares (and the securities
               -------
issuable, directly or indirectly, upon conversion of the Shares, if any) shall
be imprinted with a legend in substantially the following form:

     THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
AMENDED, AND MAY NOT BE SOLD, PLEDGED OR OTHERWISE TRANSFERRED WITHOUT AN
EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT OR PURSUANT TO RULE 144 OR AN
OPINION OF COUNSEL REASONABLY SATISFACTORY TO THE CORPORATION AND ITS COUNSEL
THAT SUCH REGISTRATION IS NOT REQUIRED.

          4.3. Compliance with Securities Laws on Transfer. This Warrant and the
               -------------------------------------------
Shares issuable upon exercise of this Warrant (and the securities issuable,
directly or indirectly, upon conversion of the Shares, if any) may not be
transferred or assigned in whole or in part without compliance with applicable
federal and state securities laws by the transferor and the transferee
(including, without limitation, the delivery of investment representation
letters and legal opinions reasonably satisfactory to the Company, as reasonably
requested by the Company). The Company shall not require Holder to provide an
opinion of counsel if the transfer is to an affiliate of Holder or if there is
no material question as to the availability of current information as referenced
in Rule 144(c), Holder represents that it has complied with Rule 144(d) and (e)
in reasonable detail, the selling broker represents that it has complied with
Rule 144(f), and the Company is provided with a copy of Holder's notice of
proposed sale.

          4.4. Transfer Procedure. Subject to the provisions of Section 4.2 and
               ------------------
4.3, Holder may transfer all or part of this Warrant or the Shares issuable upon
exercise of this Warrant (or the securities issuable, directly or indirectly,
upon conversion of the Shares, if any) by giving the Company notice of the
portion of the Warrant being transferred setting forth the name, address and
taxpayer identification number of the transferee and surrendering this Warrant
to the Company for reissuance to the transferee(s) (and Holder if applicable).
Unless the Company is filing financial information with the SEC pursuant to the
Securities Exchange Act of 1934, the Company shall have the right to refuse to
transfer any portion of this Warrant to any person who directly competes with
the Company. Notwithstanding any of the foregoing, Holder may transfer all or
any part of this Warrant on the shares issuable hereunder to its parent
corporation.

          4.5. Notices.  All notices and other communications from the Company
               -------
to the Holder, or vice versa, shall be deemed delivered and effective when given
personally or mailed by first-class registered or certified mail, postage
prepaid, at such address as may have been furnished to the Company or the
Holder, as the case may be, in writing by the Company or such holder from time
to time.

          4.6. Waiver.  This Warrant and any term hereof may be changed, waived,
               ------
discharged or terminated only by an instrument in writing signed by the party
against which enforcement of such change, waiver, discharge or termination is
sought.

                                       4
<PAGE>

          4.7. Attorneys Fees.  In the event of any dispute between the parties
               --------------
concerning the terms and provisions of this Warrant, the party prevailing in
such dispute shall be entitled to collect from the other party all costs
incurred in such dispute, including reasonable attorneys' fees.

          4.8. Governing Law.  This Warrant shall be governed by and construed
               -------------
in accordance with the laws of the State of California without giving effect to
its principles regarding conflicts of law.

                                                 HAHT SOFTWARE, INC.

                                                 By  /s/ Joseph N. Riehle
                                                   ----------------------

                                                 Name  J. N. Riehle
                                                      -------------------
                                                         (Print)

                                                 Title  Chief Financial Officer
                                                       ------------------------

                                       5<PAGE>

                                                                   EXHIBIT 10.12

                                   CHASE H&Q

     THIS WARRANT AND THE SHARES ISSUABLE HEREUNDER HAVE NOT BEEN REGISTERED
UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED, OR
OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT
OR PURSUANT TO RULE 144 OR AN OPINION OF COUNSEL REASONABLY SATISFACTORY TO THE
CORPORATION AND ITS COUNSEL, THAT SUCH REGISTRATION IS NOT REQUIRED.

                           WARRANT TO PURCHASE STOCK

Corporation:                 HAHT COMMERCE, INC.
Number of Shares:            248,022
Class of Stock:              Series E Preferred
Initial Exercise Price:      See below
Issue Date:                  April 24, 2000

     THIS WARRANT CERTIFIES THAT CHASE H&Q ("Holder") is entitled to purchase
the number of fully paid and nonassessable shares of the Class of Stock (the
"Shares") of the corporation (the "Company") at the initial exercise price per
Share (the "Warrant Price") all as set forth herein and as adjusted pursuant to
Article 2 of this Warrant, subject to the provisions and upon the terms and
conditions set forth in this Warrant. The Warrant Price shall be equal to $0.929
per share.  This Warrant will be exerciseable until the earlier of: (a) five (5)
years from the date of issuance; (b) the effectiveness of the Company's initial
public offering; and (c) a "change in control" of the Company.  A "change in
control" means the sale of all or substantially all of the assets of the Company
or the acquisition of the Company by means of consolidation or merger after
which the then current shareholders of the Company hold less than 50% of the
voting power of the surviving corporation; provided that a reincorporation of
the Company or a transaction in which the compensation received does not consist
of case or marketable securities shall not be a "change in control."  The
Company shall give Holder at least 10 days advance written notice of the events
described in (b) or (c).

ARTICLE 1. EXERCISE.

          1.1. Method of Exercise. Holder may exercise this Warrant by
               ------------------
delivering a duly executed Notice of Exercise in substantially the form attached
as Appendix 1 to the principal office of the Company. Unless Holder is
exercising the conversion right set forth in Section 1.2, Holder shall also
deliver to the Company a check for the aggregate Warrant Price for the Shares
being purchased.

          1.2. Conversion Right. In lieu of exercising this Warrant as specified
               ----------------
in Section 1.1, Holder may from time to time convert this Warrant, in whole or
in part, into a number of Shares determined by dividing (a) the aggregate fair
market value of the Shares or other securities otherwise issuable upon exercise
of this Warrant minus the aggregate Warrant Price of such Shares by (b) the fair
market value of one Share. The fair market value of the Shares shall be
determined pursuant to Section 1.4.

          1.3. No Rights of Shareholder. This Warrant does not entitle Holder to
               ------------------------
any voting rights as a shareholder of the Company prior to the exercise hereof.

          1.4. Fair Market Value.  The Board of Directors of the Company shall
               -----------------
determine fair market value in its reasonable good faith judgment.

          1.5. Delivery of Certificate and New Warrant.  Promptly after Holder
               ---------------------------------------
exercises or converts this Warrant, the Company shall deliver to Holder
certificates for the Shares acquired and, if this Warrant has not
<PAGE>

been fully exercised or converted and has not expired, a new Warrant
representing the Shares not so acquired shall be delivered to Holder.

          1.6. Replacement of Warrants.  On receipt of evidence reasonably
               -----------------------
satisfactory to the Company of the loss, theft, destruction or mutilation of
this Warrant and, in the case of loss, theft or destruction, on delivery of an
indemnity agreement reasonably satisfactory in form and amount to the Company
or, in the case of mutilation, or surrender and cancellation of this Warrant,
the Company at its expense shall execute and deliver, in lieu of this Warrant, a
new warrant of like tenor.

                     ARTICLE 2. ADJUSTMENTS TO THE SHARES.

          2.1. Stock Dividends, Splits, Etc.   If the Company declares or pays a
               ----------------------------
dividend on the Class of Stock payable in the Class of Stock or other
securities, or subdivides the outstanding Class of Stock into a greater amount
of the Class of Stock, then upon exercise of this Warrant, for each Share
acquired, Holder shall receive, without cost to Holder, the total number and
kind of securities to which Holder would have been entitled had Holder owned the
Shares of record as of the date the dividend or subdivision occurred.

          2.2. Reclassification, Exchange or Substitution.  Upon any
               ------------------------------------------
reclassification, exchange, substitution, or other event that results in a
change of the number and/or class of the securities issuable upon exercise or
conversion of this Warrant, Holder shall be entitled to receive, upon exercise
or conversion of this Warrant, the number and kind of securities and property
that Holder would have received for the Shares if this Warrant had been
exercised immediately before such reclassification, exchange, substitution, or
other event. Such an event shall include any automatic conversion of the
outstanding or issuable securities of the Company of the same class or series as
the Shares to common stock pursuant to the terms of the Company's Articles of
Incorporation. The Company or its successor shall promptly issue to Holder a new
Warrant for such new securities or other property. The new Warrant shall provide
for adjustments which shall be as nearly equivalent as may be practicable to the
adjustments provided for in this Article 2 including, without limitation,
adjustments to the Warrant Price and to the number of securities or property
issuable upon exercise of the new Warrant. The provisions of this Section 2.2
shall similarly apply to successive reclassifications, exchanges, substitutions,
or other events.

          2.3. Adjustments for Combinations, Etc. If the outstanding Shares are
               ---------------------------------
combined or consolidated, by reclassification or otherwise, into a lesser number
of shares, the Warrant Price shall be proportionately increased.

          2.4. No Impairment.  The Company shall not, by amendment of its
               -------------
Articles of Incorporation or through a reorganization, transfer of assets,
consolidation, merger, dissolution, issue, or sale of securities or any other
voluntary action, avoid or seek to avoid the observance or performance of any of
the terms to be observed or performed under this Warrant by the Company, but
shall at all times in good faith assist in carrying out of all the provisions of
this Article 2 and in taking all such action as may be necessary or appropriate
to protect Holder's rights under this Article against impairment.

          2.5. Fractional Shares.  No fractional Shares shall be issuable upo
               -----------------
n exercise or conversion of the Warrant and the number of Shares to be issued
shall be rounded down to the nearest whole Share. If a fractional share interest
arises upon any exercise or conversion of the Warrant, the Company shall
eliminate such fractional share interest by paying Holder amount computed by
multiplying the fractional interest by the fair market value of a full Share.

          2.6. Certificate as to Adjustments. Upon each adjustment of the
               -----------------------------
Warrant Price, the Company at its expense shall promptly compute such
adjustment, and furnish Holder with a certificate of its Chief Financial Officer
or other officers of the corporation setting forth such adjustment and the facts
upon which such adjustment is based. The Company shall, upon written request,
furnish Holder a certificate setting forth the Warrant Price in effect upon the
date thereof and the series of adjustments leading to such Warrant Price.
<PAGE>

ARTICLE 3. REPRESENTATIONS AND WARRANTIES OF THE COMPANY.

          3.1. Representations and Warranties. The Company hereby represents and
               ------------------------------
warrants to the Holder that all Shares which may be issued upon the exercise of
the purchase right represented by this Warrant, and all securities, if any,
issuable upon conversion of the Shares, shall, upon issuance, be duly
authorized, validly issued, fully paid and nonassessable, and free of any liens
and encumbrances except for restrictions on transfer provided for herein or
under applicable federal and state securities laws. The Company shall at all
times reserve a sufficient number of Shares and of shares of common stock for
issuance upon Holder's exercise of its rights hereunder and conversion of the
Shares.

ARTICLE 4. MISCELLANEOUS.

          4.1. Legends. This Warrant and the Shares (and the securities
               -------
issuable, directly or indirectly, upon conversion of the Shares, if any) shall
be imprinted with a legend in substantially the following form:

     THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS
AMENDED, AND MAY NOT BE SOLD, PLEDGED OR OTHERWISE TRANSFERRED WITHOUT AN
EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT OR PURSUANT TO RULE 144 OR AN
OPINION OF COUNSEL REASONABLY SATISFACTORY TO THE CORPORATION AND ITS COUNSEL
THAT SUCH REGISTRATION IS NOT REQUIRED.

          4.2. Compliance with Securities Laws on Transfer. This Warrant and the
               -------------------------------------------
Shares issuable upon exercise this Warrant (and the securities issuable,
directly or indirectly, upon conversion of the Shares, if any) may not be
transferred or assigned in whole or in part without compliance with applicable
federal and state securities laws by the transferor and the transferee
(including, without limitation, the delivery of investment representation
letters and legal opinions reasonably satisfactory to the Company, as reasonably
requested by the Company). The Company shall not require Holder to provide an
opinion of counsel if the transfer is to an affiliate of Holder or if there is
no material question as to the availability of current information as referenced
in Rule 144(c), Holder represents that it has complied with Rule 144(d) and (e)
in reasonable detail, the selling broker represents that it has complied with
Rule 144(f), and the Company is provided with a copy of Holder's notice of
proposed sale.

          4.3. Transfer Procedure.  Subject to the provisions of Section 4.1
               ------------------
and 4.2, Holder may transfer all or part of this Warrant or the Shares issuable
upon exercise of this Warrant (or the securities issuable, directly or
indirectly, upon conversion of the Shares, if any) by giving the Company notice
of the portion of the Warrant being transferred setting forth the name, address
and taxpayer identification number of the transferee and surrendering this
Warrant to the Company for reissuance to the transferee(s) (and Holder if
applicable). Unless the Company is filing financial information with the SEC
pursuant to the Securities Exchange Act of 1934, the Company shall have the
right to refuse to transfer any portion of this Warrant to any person who
directly competes with the Company.

          4.4. Notices.  All notices and other communications from the Company
               -------
to the Holder, or vice versa, shall be deemed delivered and effective when given
personally or mailed by first-class registered or certified mail, postage
prepaid, at such address as may have been furnished to the Company or the
Holder, as the case may be, in writing by the Company or such holder from time
to time.

          4.5. Waiver. This Warrant and any term hereof may be changed, waived,
               ------
discharged or terminated only by an instrument in writing signed by the party
against which enforcement of such change, waiver, discharge or termination is
sought.

          4.6. Attorneys' Fees.  In the event of any dispute between the
               ---------------
parties concerning the terms and provisions of this Warrant, the party
prevailing in such dispute shall be entitled to collect from the other party all
costs incurred in such dispute, including reasonable attorneys' fees.

          4.7. Governing Law.  This Warrant shall be governed by and construed
               -------------
in accordance with the laws of the State of Delaware without giving effect to
its principles regarding conflicts of law.
<PAGE>

                                                  HAHT COMMERCE, INC.

                                                  By /s/ J Nick Riehle
                                                    ------------------------
                                                  Name J Nick Riehle
                                                       ---------------------
                                                          (Print)

                                                  Title  CFO
                                                       ---------------------

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