Document:

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                                                                     EXHIBIT 4.4

THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE BEEN ACQUIRED FOR
INVESTMENT AND HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 OR ANY
STATE SECURITIES LAW. SUCH SECURITIES MAY NOT BE SOLD OR TRANSFERRED IN THE
ABSENCE OF SUCH REGISTRATION OR AN EXEMPTION THEREFROM UNDER SAID ACT AND ANY
APPLICABLE STATE SECURITIES LAWS.

                              WARRANT TO PURCHASE

                      SHARES OF SERIES B PREFERRED STOCK
                         RELEASE SOFTWARE CORPORATION
                          (Void after July 31, 2003)

          This certifies that VENTURE LENDING & LEASING, INC., a Maryland
corporation, or assigns (the "Holder"), for value received, is entitled to
purchase from RELEASE SOFTWARE CORPORATION, a Delaware corporation (the
"Company"), that number of fully paid and nonassessable shares of the Company's
Series B Preferred Stock ("Preferred Stock") equal to $49,000 divided by the per
share price paid by investors in the Company's Series B Preferred Stock
Financing (the "Series B Purchase Price") for cash at a price per share equal to
the Series B Purchase Price (the "Stock Purchase Price") at any time following
the closing of the Company's Series B Preferred Stock Financing up to and
including 5:00 p.m. (Pacific time) on July 31, 2003 (the "Expiration Date"),
upon surrender to the Company at its principal office at 200 Middlefield Road,
Suite 202 Menlo Park, CA 94025 (or at such other location as the Company may
advise Holder in writing) of this Warrant properly endorsed with the Form of
Subscription attached hereto duly filled in and signed and upon payment in cash
or by check of the aggregate Stock Purchase Price for the number of shares for
which this Warrant is being exercised determined in accordance with the
provisions hereof. The Stock Purchase Price and the number of shares purchasable
hereunder are subject to adjustment as provided in Section 4 of this Warrant.

          This Warrant is subject to the following terms and conditions:

     1.   Exercise; Issuance of Certificates; Payment for Shares.
          -------------------------------------------------------

          (a) Unless an election is made pursuant to clause (b) of this Section
1, this Warrant shall be exercisable at the option of the Holder, at any time or
from time to time, on or before the Expiration Date for all or any portion of
the shares of Preferred Stock (but not for a fraction of a share) which may be
purchased hereunder for the Stock Purchase Price multiplied by the number of
shares to be purchased. In the event, however, that pursuant to the Company's
Certificate of Incorporation, as amended, an event causing automatic conversion
of the Company's Preferred Stock shall have occurred prior to the exercise of
this Warrant, in
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whole or in part, then this Warrant shall be exercisable for the number of
shares of Common Stock of the Company into which the Preferred Stock not
purchased upon any prior exercise of the Warrant would have been so converted
(and, where the context requires, reference to "Preferred Stock" shall be deemed
to include such Common Stock). The Company agrees that the shares of Preferred
Stock purchased under this Warrant shall be and are deemed to be issued to the
holder hereof as the record owner of such shares as of the close of business on
the date on which this Warrant shall have been surrendered and payment made for
such shares. Subject to the provisions of Section 2, certificates for the shares
of Preferred Stock so purchased, together with any other securities or property
to which the Holder hereof is entitled upon such exercise, shall be delivered to
the Holder hereof by the Company at the Company's expense within a reasonable
time after the rights represented by this Warrant have been so exercised. Except
as provided in clause (b) of this Section 1, in case of a purchase of less than
all the shares which may be purchased under this Warrant, the Company shall
cancel this Warrant and execute and deliver a new Warrant or Warrants of like
tenor for the balance of the shares purchasable under the Warrant surrendered
upon such purchase to the Holder hereof within a reasonable time. Each stock
certificate so delivered shall be in such denominations of Preferred Stock as
may be requested by the Holder hereof and shall be registered in the name of
such Holder or such other name as shall be designated by such Holder, subject to
the limitations contained in Section 2.

          (b) The Holder, in lieu of exercising this Warrant by the payment of
the Stock Purchase Price pursuant to clause (a) of this Section 1, may elect, at
any time on or before the Expiration Date, to receive that number of shares of
Preferred Stock equal to the quotient of: (i) the difference between (A) the Per
Share Price (as hereinafter defined) of the Preferred Stock, less (B) the Stock
Purchase Price then in effect, multiplied by the number of shares of Preferred
Stock the Holder would otherwise have been entitled to purchase hereunder
pursuant to clause (a) of this Section 1 (or such lesser number of shares as the
Holder may designate in the case of a partial exercise of this Warrant); over
(ii) the Per Share Price.

          (c) For purposes of clause (b) of this Section 1, "Per Share Price"
means the product of: (i) the greater of (A) the average of the closing bid and
asked prices of the Company's Common Stock as quoted by NASDAQ or listed on any
exchange, whichever is applicable, as published in the Western Edition of The
                                                                          ---
Wall Street Journal for the ten (10) trading days prior to the date of the
-------------------
Holder's election hereunder or, (B) if applicable at the time of or in
connection with the exercise under clause (b) of this Section 1, the gross sales
price of one share of the Company's Common

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Stock pursuant to a registered public offering or that amount which shareholders
of the Company will receive for each share of Common Stock pursuant to a merger,
reorganization or sale of assets; and (ii) that number of shares of Common Stock
into which each share of Preferred Stock is convertible. If the Company's Common
Stock is not quoted by NASDAQ or listed on an exchange, the Per Share Price of
the Preferred Stock (or the equivalent number of shares of Common Stock into
which such Preferred Stock is convertible) shall be the price per share which
the Company would obtain from a willing buyer for shares sold by the Company
from authorized but unissued shares as such price shall be agreed upon by the
Holder and the Company or, if agreement cannot be reached within ten (10)
business days of the Holder's election hereunder, as such price shall be
determined by a panel of three (3) appraisers, one (1) to be chosen by the
Company, one (1) to be chosen by the Holder and the third to be chosen by the
first two (2) appraisers. If the appraisers cannot reach agreement within 30
days of the Holder's election hereunder, then each appraiser shall deliver its
appraisal and the appraisal which is neither the highest nor the lowest shall
constitute the Per Share Price. In the event either party fails to choose an
appraiser within 30 days of the Holder's election hereunder, then the appraisal
of the sole appraiser shall constitute the Per Share Price. Each party shall
bear the cost of the appraiser selected by such party and the cost of the third
appraiser shall be borne one-half by each party. In the event either party fails
to choose an appraiser, the cost of the sole appraiser shall be borne one-half
by each party.

     2.   Limitation on Transfer.
          ----------------------

          (a) The Warrant and the Preferred Stock shall not be transferable
except upon the conditions specified in this Section 2, which conditions are
intended to insure compliance with the provisions of the Securities Act. Each
holder of this Warrant or the Preferred Stock issuable hereunder will cause any
proposed transferee of the Warrant or Preferred Stock to agree to take and hold
such securities subject to the provisions and upon the conditions specified in
this Section 2.

          (b) Each certificate representing (i) this Warrant, (ii) the Preferred
Stock, (iii) shares of the Company's Common Stock issued upon conversion of the
Preferred Stock and (iv) any other securities issued in respect of the Preferred
Stock or Common Stock issued upon conversion of the Preferred Stock upon any
stock split, stock dividend, recapitalization, merger, consolidation or similar
event, shall (unless otherwise permitted by the provisions of this Section 2 or
unless such securities have been registered under the Securities Act or sold
under Rule 144) be stamped or otherwise imprinted with a legend substantially in
the

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following form (in addition to any legend required under applicable State
securities laws).

     THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE BEEN ACQUIRED FOR
     INVESTMENT AND HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 OR
     ANY STATE SECURITIES LAWS. SUCH SECURITIES MAY NOT BE SOLD OR TRANSFERRED
     IN THE ABSENCE OF SUCH REGISTRATION OR AN EXEMPTION THEREFROM UNDER SAID
     ACT AND ANY APPLICABLE STATE SECURITIES LAWS.

          (c) The Holder of this Warrant and each person to whom this Warrant is
subsequently transferred represents and warrants to the Company (by acceptance
of such transfer) that it will not transfer the Warrant (or securities issuable
upon exercise hereof unless a registration statement under the Securities Act
was in effect with respect to such securities at the time of issuance thereof)
except pursuant to (i) an effective registration statement under the Securities
Act, (ii) Rule 144 under the Securities Act (or any other rule under the
Securities Act relating to the disposition of securities), or (iii) an opinion
of counsel, reasonably satisfactory to counsel for the Company, that an
exemption from such registration is available.

     3.   Shares to be Fully paid; Reservation of Shares. The Company covenants
          ----------------------------------------------
and agrees that all shares of Preferred Stock which may be issued upon the
exercise of the rights represented by this Warrant will, upon issuance, be duly
authorized, validly issued, fully paid and nonassessable and free from all
preemptive rights of any shareholder and free of all taxes, liens and charges
with respect to the issue thereof. The Company further covenants and agrees that
during the period within which the rights represented by this Warrant may be
exercised, the Company will at all times have authorized and reserved, for the
purpose of issue or transfer upon exercise of the subscription rights evidenced
by this Warrant, a sufficient number of shares of authorized but unissued
Preferred Stock, or other securities and property, when and as required to
provide for the exercise of the rights represented by this Warrant. The Company
will take all such action as may be necessary to assure that such shares of
Preferred Stock may be issued as provided herein without violation of any
applicable law or regulation, or of any requirements of any domestic securities
exchange upon which the Preferred Stock may be listed. The Company will not take
any action which would result in any adjustment of the Stock Purchase Price (as
defined in Section 4 hereof) (i) if the total number of shares of Preferred
Stock issuable after such action upon exercise of all outstanding warrants,
together with all shares of Preferred Stock then outstanding and all shares of
Preferred Stock then issuable upon exercise of all options and upon the
conversion of all convertible securities then outstanding, would exceed the
total number of

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shares of Preferred Stock then authorized by the Company's Certificate of
Incorporation, or (ii) if the total number of shares of Common Stock issuable
after such action upon the conversion of all such shares of Preferred Stock
together with all shares of Common Stock then outstanding and then issuable upon
exercise of all options and upon the conversion of all convertible securities
then outstanding would exceed the total number of shares of Common Stock then
authorized by the Company's Articles of Incorporation.

     4.   Adjustment of Stock Purchase Price Number of Shares. The Stock
          ---------------------------------------------------
Purchase Price and the number of shares purchasable upon the exercise of this
Warrant shall be subject to adjustment from time to time upon the occurrence of
certain events described in this Section 4. Upon each adjustment of the Stock
Purchase Price, the Holder of this Warrant shall thereafter be entitled to
purchase, at the Stock Purchase Price resulting from such adjustment, the number
of shares obtained by multiplying the Stock Purchase Price in effect immediately
prior to such adjustment by the number of shares purchasable pursuant hereto
immediately prior to such adjustment, and dividing the product thereof by the
Stock Purchase Price resulting from such adjustment.

     4.1  Subdivision or Combination of Stock. In case the Company shall at any
          -------------------------------------
time subdivide its outstanding shares of Preferred Stock into a greater number
of shares, the Stock Purchase Price in effect immediately prior to such
subdivision shall be proportionately reduced, and conversely, in case the
outstanding shares of Preferred Stock of the Company shall be combined into a
smaller number of shares, the Stock Purchase Price in effect immediately prior
to such combination shall be proportionately increased.

     4.2  Dividends in Preferred Stock, other Stock, Property, Reclassification.
          ---------------------------------------------------------------------
If at any time or from time to time the holders of Preferred Stock (or any
shares of stock or other securities at the time receivable upon the exercise of
this Warrant) shall have received or become entitled to receive, without payment
therefor,

               (a) Preferred Stock, or any shares of stock or other securities
whether or not such securities are at any time directly or indirectly
convertible into or exchangeable for Preferred Stock, Or any rights or options
to subscribe for, purchase or otherwise acquire any of the foregoing by way of
dividend or other distribution, or

               (b) any cash paid or payable otherwise than as a cash dividend,
or

               (c) Preferred Stock or other or additional stock or other
securities or property (including cash) by way of spinoff, split-up,
reclassification, combination of shares

                                       5
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or similar corporate rearrangement, (other than shares of Preferred Stock issued
as a stock split, adjustments in respect of which shall be covered by the terms
of Section 4.1 above), then and in each such case, the Holder hereof shall, upon
the exercise of this Warrant, be entitled to receive, in addition to the number
of shares of Preferred Stock receivable thereupon, and without payment of any
additional consideration therefore, the amount of stock and other securities and
property (including cash in the cases referred to in clauses (b) and (c) above)
which such Holder would hold on the date of such exercise had he been the holder
of record of such Preferred Stock as of the date on which holders of Preferred
Stock received or became entitled to receive such shares and/or all other
additional stock and other securities and property.

          4.3  Reorganization, Reclassification, Consolidation, Merger or Sale.
               ---------------------------------------------------------------
If any capital reorganization of the capital stock of the Company, or any
consolidation or merger of the Company with another corporation, or the sale of
all or substantially all of its assets to another corporation shall be effected
in such a way that holders of Preferred Stock Shall be entitled to receive
stock, securities or assets with respect to or in exchange for Preferred Stock,
then, as a condition of such reorganization, reclassification, consolidation,
merger or sale, lawful and adequate provisions shall be made whereby the holder
hereof shall thereafter have the right to purchase and receive(in lieu of the
shares of the Preferred Stock of the Company immediately theretofore purchasable
and receivable upon the exercise of the rights represented hereby) such shares
of stock, securities or assets as may be issued or payable with respect to or in
exchange for a number of outstanding shares of such Preferred Stock equal to the
number of shares of such stock immediately theretofore purchasable and
receivable upon the exercise of the rights represented hereby. In any such case,
appropriate provision shall be made with respect to the rights and interests of
the holder of this Warrant to the end that the provisions hereof (including,
without limitation, provisions for adjustments of the Stock Purchase Price and
of the number of shares purchasable and receivable upon the exercise of this
Warrant) shall thereafter be applicable, as nearly as may be possible, in
relation to any shares of stock, securities or assets thereafter deliverable
upon the exercise hereof. The Company will not effect any such consolidation,
merger or sale unless, prior to the consummation thereof, the successor
corporation (if other than the Company) resulting from such consolidation or the
corporation purchasing such assets shall assume by written instrument, executed
and mailed or delivered to the registered Holder hereof at the last address of
such Holder appearing on the books of the Company, the obligation to deliver to
such Holder such shares of stock,

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securities or assets as, in accordance with the foregoing provisions, such
Holder may be entitled to purchase.

          4.4  Intentionally Deleted.
               ---------------------

          4.5  Notice of Adjustment. Upon any adjustment of the Stock Purchase
               --------------------
Price, and/or any increase or decrease in the number of shares purchasable upon
the exercise of this Warrant the Company shall give written notice thereof, by
first class mail, postage prepaid, addressed to the registered holder of this
Warrant at the address of such holder as shown on the books of the Company. The
notice shall be signed by the Company's chief financial officer and shall state
the Stock Purchase Price resulting from such adjustment and the increase or
decrease, if any, in the number of shares purchasable at such price upon the
exercise of this Warrant, setting forth in reasonable detail the method of
calculation and the facts upon which such calculation is based.

          4.6  Other Notices. If at any time:
               -------------

               (a) the Company shall declare any cash dividend upon its
Preferred Stock;

               (b) the Company shall declare any dividend upon its Preferred
Stock payable in stock or make any special dividend or other distribution to the
holders of its Preferred Stock;

               (c) the Company shall offer for subscription pro rata to the
holders of its Preferred Stock any additional shares of stock of any class or
other rights;

               (d) there shall be any capital reorganization or reclassification
of the capital stock of the Company, or consolidation or merger of the Company
with, or sale of all or substantially all of its assets to, another corporation;

               (e) there shall be a voluntary or involuntary dissolution,
liquidation or winding-up of the Company; or

               (f) the Company shall take or propose to take any other action,
notice of which is actually provided to holders of the Preferred Stock;

then, in any one or more of said cases, the Company shall give, by first class
mail, postage prepaid, addressed to the holder of this Warrant at the address of
such holder as shown on the books of the Company, (i) at least 20 day's prior
written notice of the date on which the books of the Company shall close or a
record shall be taken for such dividend, distribution or subscription rights or
for determining rights to vote in respect of any such reorganization,

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reclassification, consolidation, merger, sale, dissolution, liquidation or
winding-up, or other action and (ii) in the case of any such reorganization,
reclassification, consolidation, merger, sale, dissolution, liquidation or
winding-up, or other action, at least 20 day's written notice of the date when
the same shall take place. Any notice given in accordance with the foregoing
clause (i) shall also specify, in the case of any such dividend, distribution or
subscription rights, the date on which the holders of Preferred Stock shall be
entitled thereto. Any notice given in accordance with the foregoing clause (ii)
shall also specify the date on which the holders of Preferred Stock shall be
entitled to exchange their Preferred Stock for securities or other property
deliverable upon such reorganization, reclassification, consolidation, merger,
sale, dissolution, liquidation or winding-up, or other action as the case may
be.

          4.7  Certain Events. If any change in the outstanding Preferred Stock
               --------------
of the Company or any other event occurs as to which the other provisions of
this Section 4 are not strictly applicable or if strictly applicable would not
fairly protect the purchase rights of the Holder of the Warrant in accordance
with the essential intent and principles of such provisions, then the Board of
Directors of the Company shall make an adjustment in the number and class of
shares available under the Warrant, the Stock Purchase Price and/or the
application of such provisions, in accordance with such essential intent and
principles, so as to protect such purchase rights as aforesaid. The adjustment
shall be such as will give the Holder of the Warrant upon exercise for the same
aggregate Stock Purchase Price the total number, class and kind of shares as he
would have owned had the Warrant been exercised prior to the event and had he
continued to hold such shares until after the event requiring adjustment.

     5.   Issue Tax. The issuance of certificates for shares of Preferred Stock
          ---------
upon the exercise of the Warrant shall be made without charge to the Holder of
the Warrant for any issue tax in respect thereof; provided, however, that the
Company shall not be required to pay any tax which may be payable in respect of
any transfer involved in the issuance and delivery of any certificate in a name
other than that of the then Holder of the Warrant being exercised.

     6.   Closing of Books. The Company will at no time close its transfer books
          ----------------
against the transfer of any Warrant or of any shares of Preferred Stock issued
or issuable upon the exercise of any warrant in any manner which interferes with
the timely exercise of this Warrant.

     7.   No Voting or Dividend Rights; Limitation of Liability. Nothing
          -----------------------------------------------------
contained in this Warrant shall be

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construed as conferring upon the Holder hereof the right to vote or to consent
as a shareholder in respect of meetings of shareholders for the election of
directors of the Company or any other matters or any rights whatsoever as a
shareholder of the Company. No dividends or interest shall be payable or accrued
in respect of this Warrant or the interest represented hereby or the shares
purchasable hereunder until, and only to the extent that, this Warrant shall
have been exercised. No provisions hereof, in the absence of affirmative action
by the holder to purchase shares of Preferred Stock, and no mere enumeration
herein of the rights or privileges of the Holder hereof, shall give rise to any
liability of such Holder for the Stock Purchase Price or as a shareholder of the
Company, whether such liability is asserted by the Company or by its creditors.

     8.   Intentionally Deleted.
          ----------------------

     9.   Registration Rights. The Holder hereof shall be entitled, with respect
          -------------------
to the shares of Preferred Stock issued upon exercise hereof or the shares of
Common Stock or other securities issued upon conversion of such Preferred Stock
as the case may be, to all of the registration rights set forth in the Investor
Rights Agreement dated as of February 26, 1996 to the same extent and on the
same terms and conditions as possessed by the Purchasers. The company shall take
such action as may be reasonably necessary to assure that the granting of such
registration rights to the Holder does not violate the provisions of such
agreement or any of the Company's charter documents or rights of prior Grantees
of registration rights.

     10.  Rights and Obligations Survive Exercise of Warrant. The rights and
          --------------------------------------------------
obligations of the Company, of the Holder of this Warrant and of the holder of
shares of Preferred Stock issued upon exercise of this Warrant, contained in
Sections 6 and 8 shall survive the exercise of this Warrant.

     11.  Modification and Waiver. This Warrant and any provision hereof may be
          -----------------------
changed, waived, discharged or terminated only by an instrument in writing
signed by the party against which enforcement of the same is sought.

     12.  Notices. Any notice, request or other document required or permitted
          -------
to be given or delivered to the holder hereof or the Company shall be deemed to
have been given (i) upon receipt if delivered personally or by courier (ii) upon
confirmation of receipt if by telecopy or (iii) three business days after
deposit in the US mail, with postage prepaid and certified or registered, to
each such holder at its address as shown on the books of the Company or to the
Company at the address indicated therefor in the first paragraph of this
Warrant.

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     13.  Binding Effect on Successors. This Warrant shall be binding upon any
          ----------------------------
corporation succeeding the Company by merger, consolidation or acquisition of
all or substantially all of the Company's assets. All of the obligations of the
Company relating to the Preferred Stock issuable upon the exercise of this
Warrant shall survive the exercise and termination of this Warrant. All of the
covenants and agreements of the Company shall inure to the benefit of the
successors and assign of the holder hereof. The Company will, at the time of the
exercise of this Warrant, in whole or in part, upon request of the Holder hereof
but at the Company's expense, acknowledge in writing its continuing obligation
to the Holder hereof in respect of any rights (including, without limitation,
any right to registration of the shares of Common Stock) to which the holder
hereof shall continue to be entitled after such exercise in accordance with this
Warrant; provided, that the failure of the holder hereof to make any such
request shall not affect the continuing obligation of the Company to the Holder
hereof in respect of such rights.

     14.  Descriptive Headings and Governing Law. The descriptive headings of
          --------------------------------------
the several sections and paragraphs of this Warrant are inserted for convenience
only and do not constitute a part of this Warrant. This Warrant shall be
construed and enforced in accordance with, and the rights of the parties shall
be governed by, the laws of the State of California.

     15.  Lost Warrants or Stock Certificates. The Company represents and
          -----------------------------------
warrants to the Holder hereof that upon receipt of evidence reasonably
satisfactory to the Company of the loss, theft, destruction, or mutilation of
any Warrant or stock certificate and, in the case of any such loss, theft or
destruction, upon receipt of an indemnity reasonably satisfactory to the
Company, or in the case of any such mutilation upon surrender and cancellation
of such Warrant or stock certificate, the Company at its expense will make and
deliver a new Warrant or stock certificate, of like tenor, in lieu of the lost,
stolen, destroyed or mutilated Warrant or stock certificate.

     16.  Fractional Shares. No fractional shares shall be issued upon exercise
          -----------------
of this Warrant. The Company shall, in lieu of issuing any fractional share, pay
the holder entitled to such fraction a sum in cash equal to such fraction
multiplied by the then effective Stock Purchase Price.

     17.  Representations of Holder. With respect to this Warrant, Holder
          -------------------------
represents and warrants to the Company as follows:

                                       10
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          17.1  Experience. It is experienced in evaluating and investing in
                ----------
companies engaged in businesses similar to that of the Company; it understands
that investment in the Warrant involves substantial risks; it has made detailed
inquiries concerning the Company, its business and services, its officers and
its personnel; the officers of the Company have made available to Holder any and
all written information it has requested; the officers of the Company have
answered to Holder's satisfaction all inquiries made by it; in making this
investment it has relied upon information made available to it by the Company;
and it has such knowledge and experience in financial and business matters that
it is capable of evaluating the merits and risks of investment in the Company
and it is able to bear the economic risk of that investment.

          17.2  Investment. It is acquiring the Warrant for investment for its
                ----------
own account and not with a view to, or for resale in connection with, any
distribution thereof. It understands that the Warrant, the shares of Preferred
Stock issuable upon exercise thereof and the shares of Common Stock issuable
upon conversion of the Preferred Stock, have not been registered under the
Securities Act of 1933, as amended, nor qualified under applicable state
securities laws.

          17.3  Rule 144. It acknowledges that the Warrant, the Preferred Stock
                --------
and the Common Stock must be held indefinitely unless they are subsequently
registered under the Securities Act or an exemption from such registration is
available. It has been advised or is aware of the provisions of Rule 144
promulgated under the Securities Act.

          17.4  Access to Data. It has had an opportunity to discuss the
                --------------
Company's business, management and financial affairs with the Company's
management and has had the opportunity to inspect the Company's facilities.

     18.  Additional Representations and Covenants of the Company. The Company
          -------------------------------------------------------
hereby represents, warrants and agrees as follows:

          18.1  Corporate Power. The Company has all requisite corporate power
                ---------------
and corporate authority to issue this Warrant and to carry out and perform its
obligations hereunder.

          18.2  Authorization. All corporate action on the part of the Company,
                -------------
its directors and shareholders necessary for the authorization, execution,
delivery and performance by the Company of this has been taken. This Warrant is
a valid and binding obligation of the Company, enforceable in accordance with
its terms.

                                       11
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          18.3  Offering. Subject in part to the truth and accuracy of Holder's
                --------
representations set forth in Section 17 hereof, the offer, issuance and sale of
the Warrant is, and the issuance of Preferred Stock upon exercise of the Warrant
and the issuance of Common Stock upon conversion of the Preferred Stock will be
exempt from the registration requirements of the Securities Act, and are exempt
from the qualification requirements of any applicable state securities laws; and
neither the Company nor anyone acting on its behalf will take any action
hereafter that would cause the loss of such exemptions.

          18.4  Stock Issuance. Upon exercise of the Warrant, the Company will
                --------------
use its best efforts to cause stock certificates representing the shares of
Preferred Stock purchased pursuant to the exercise to be issued in the
individual names of Holder, its nominees or assignees, as appropriate at the
time of such exercise. Upon conversion of the shares of Preferred Stock to
shares of Common Stock, the Company will issue the Common Stock in the
individual names of Holder, its nominees or assignees, as appropriate.

          18.5  Articles and By-Laws. The Company has provided Holder with true
                --------------------
and complete copies of the Company's Articles or Certificate of Incorporation,
By-Laws, and each Certificate of Determination or other charter document
setting, forth any rights, preferences and privileges of Company's capital
stock, each as amended and in effect on the date of issuance of this Warrant.

          18.6  Conversion of Preferred Stock. As of the date hereof, each share
                -----------------------------
of the Preferred Stock is convertible into one share of the Common Stock.

          18.7  Financial and Other Reports. From time to time up to the earlier
                ---------------------------
of the Expiration Date or the complete exercise of this Warrant, the Company
shall furnish to Holder (i) within 90 days after the close of each fiscal year
of the Company an audited balance sheet and statement of changes in financial
position at and as of the end of such fiscal year, together with an audited
statement of income for such fiscal year; (ii) within 45 days after the close of
each fiscal quarter of the Company, an unaudited balance sheet and statement of
cash flows at and as of the end of such quarter, together with an unaudited
statement of income for such quarter; and (iii) promptly after sending, making
available, or filing, copies of all reports, proxy statements, and financial
statements that the Company sends or makes available to its shareholders and all
registration statements and reports that the Company files with the SEC or any
other governmental or regulatory authority.

                                       12
<PAGE>

          IN WITNESS WHEREOF, the Company has caused this Warrant to be duly
executed by its officers, thereunto duly authorized this 31st day of July, 1996.

RELEASE SOFTWARE CORPORATION

By: /s/Mark Benning
    ---------------

Title: VP Sales & Finance
       ------------------

                                       13<PAGE>

                                                                     Exhibit 4.5

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:               Release Software Corporation, a Delaware Corporation
 Number of Shares:          35,714 (subject to Section 1.9)
 Class of Stock:            Series B Preferred (subject to Section 1.9)
 Initial Exercise Price:    $0.70 per share (subject to Section 1.9)
 Issue Date:                July 10, 1997
                                 --
 Expiration Date:           July 10, 2002 (Subject to Article 4.1)
                                 --

     THIS WARRANT CERTIFIES THAT, in consideration of the payment of $l.00 and
for other good and valuable consideration, IMPERIAL BANK or IMPERIAL BANCORP, at
their option, ("Holder") is entitled to purchase the number of fully paid and
nonassessable shares of the class of securities (the "Shares") of the
corporation (the "Company") at the initial exercise price per Share (the
"Warrant Price") all as set forth above and as adjusted pursuant to Article 2 of
this Warrant, subject to the provisions and upon the terms and conditions set
forth of this Warrant.

ARTICLE 1. EXERCISE
           --------

     1.1  Method of Exercise. Holder may exercise this Warrant by delivering
          ------------------
this Warrant and 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 1.5.

     1.3  Omitted.
          -------

     1.4  Omitted.
          -------

     1.5  Fair Market Value. If the Shares are traded regularly in a public
          -----------------
market, the fair market value of the Shares shall be 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
<PAGE>

its Notice of Exercise to the Company. If the Shares are not regularly traded in
a public market, the Board of Directors of the Company 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 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.

     1.6  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.

     1.7  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.

     1.8  Repurchase on Sale, Merger, or Consolidation of the Company.
          -----------------------------------------------------------

          1.8.1.    "Acquisition". For the purpose of this Warrant,
                     -----------
"Acquisition" means any sale, license, or other disposition of all or
substantially all of the assets (including intellectual property) 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.

          1.8.2.    Assumption of Warrant. If upon the closing of any
                    ---------------------
Acquisition the successor entity assumes the obligations of this Warrant, then
this Warrant shall be exercisable for the same securities, cash, and property as
would be payable for the Shares issuable upon 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. The Company shall use reasonable efforts to cause the surviving
corporation to assume the obligations of this Warrant.

          1.8.3.    Nonassumption. If upon the closing of any Acquisition the
                    -------------
successor entity does not assume the obligations of this Warrant and Holder has
not otherwise exercised this Warrant in full, then the unexercised portion of
this Warrant shall be deemed to have been automatically converted pursuant to
Section 1.2 and thereafter Holder shall participate in the Acquisition on the
same terms as other holders of the same class of securities of the Company.

          1.8.4.    Purchase Right. 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

                                       2
<PAGE>

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, but in no event less than zero; provided,
however, that the purchase right under this Section 1.8.4 shall not be effective
if the accountants for the Company determine that it would result in the
disallowance of pooling of interest treatment.

     1.9  Adjustment in Underlying Preferred Stock Price and Exercise Price.
          -----------------------------------------------------------------
If on or before August 15, 1997, the Company sells and issues to any investors,
preferred stock with aggregate gross proceeds to the Company of at least
$3,000,000, this Warrant shall concurrent with the issuance of such shares of
preferred stock automatically be adjusted to instead be exercisable for shares
of the same series and class and bearing the same rights, preferences, and
privileges, of such shares of stock, with the Warrant Price hereunder adjusted
to equal the per share purchase price of such stock, and the number of such
shares subject to this Warrant adjusted to equal (i) Twenty-Five Thousand
Dollars ($25,000.00), divided by (ii) such modified per share Warrant Price.

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,
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.

     2.3  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  Adjustments for Diluting Issuances. The Warrant Price and the number
          ----------------------------------
of Shares issuable upon exercise of this Warrant shall be subject to adjustment,
from time to time, in the manner set forth on Exhibit A, if attached, in the
event of Diluting Issuances (as defined on Exhibit A).

                                       3
<PAGE>

     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 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. If the Company takes any action
affecting the Shares or its common stock other than as described above that
adversely affects Holder's rights under this Warrant, the Warrant Price shall be
adjusted downward and the number of Shares issuable upon exercise of this
Warrant shall be adjusted upward in such a manner that the aggregate Warrant
Price of this Warrant is unchanged.

     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 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 as follows:

          (a)  The initial Warrant Price referenced on the first page of this
Warrant is not greater than the fair market value of the Shares as of the date
of this Warrant.

          (b)  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.

     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 20 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 20 days prior written notice of the date when the
same will take place (and specifying the date on which the holders of

                                       4
<PAGE>

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.

     3.3  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 communiques to the shareholders of the Company, (b)
within ninety (90) days after the end of each fiscal year of the Company, the
annual audited financial statements of the Company certified by independent
public accountants of recognized standing and (c) within forty-five (45) days
after the end of each of the first three quarters of each fiscal year, the
Company's quarterly, unaudited financial statements.

     3.4  Registration Under Securities Act of 1933, as amended. The Company
          -----------------------------------------------------
agrees that the Shares shall be subject to the registration rights set forth on
Exhibit B.

ARTICLE 4. MISCELLANEOUS.
           -------------

     4.1  Term: Notice of Expiration. 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. The Company shall give Holder written notice of Holder's right to
exercise this Warrant in the form attached as Appendix 2 not more than 90 days
and not less than 30 days before the Expiration Date. If the notice is not so
given, the Expiration Date shall automatically be extended until 30 days after
the date the Company delivers the notice to Holder.

     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 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). 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.

                                       5
<PAGE>

     4.4  Transfer Procedure. Subject to the provisions of Section 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.

     4.5  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.

     4.7  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.

                                    Release Software Corporation

                                    By: /s/ Mark Benning
                                        ----------------------------

                                    Name: Mark Benning
                                          ----------------------------

                                    Title:            CFO
                                           ----------------------------

                                       6
<PAGE>

                                  APPENDIX 1

                              NOTICE OF EXERCISE
                              ------------------

     1.   The undersigned hereby elects to purchase ________ shares of the
Series B Preferred Stock of Release Software Corporation pursuant to the terms
of the attached Warrant, and tenders herewith payment of the purchase price of
such shares in full.

     1.   The undersigned hereby elects to convert the attached Warrant into
Shares/cash [strike one] in the manner specified in the Warrant. This conversion
is exercised with respect to ____________ of the Shares covered by the Warrant.

     [Strike paragraph that does not apply.]

     2.   Please issue a certificate or certificates representing said shares in
the name of the undersigned or in such other name as is specified below:

               Christine McCarthy
               Chief Financial Officer
               Controllers Department
               Imperial Bank or Imperial Bancorp
               P.O. Box 92991
               Los Angeles, CA 90009

     3.   The undersigned represents it is acquiring the shares solely for its
own account and not as a nominee for any other party and not with a view toward
the resale or distribution thereof except in compliance with applicable
securities laws.

IMPERIAL BANK or IMPERIAL BANCORP

_________________________________
(Signature)

_________________________________
(Date)

                                       7
<PAGE>

                                  APPENDIX 2

                    NOTICE THAT WARRANT IS ABOUT TO EXPIRE
                    --------------------------------------

____________, ____

Christine McCarthy
Chief Financial Officer
Controllers Department
Imperial Bank or Imperial Bancorp
P.O. Box 92991
Los Angeles, CA 90009

Dear Christine:

This is to advise you that the Warrant issued to you described below will expire
on July 10, 2002.
        --

Issuer:                            Release Software Corporation

Issue Date:                        July 10, 1997
                                        --

Class of Security Issuable:        Series B Preferred (Subject to Section 1.9)

Exercise Price Per Share:          $0.70 (Subject to Section 1.9)

Number of Shares Issuable:         35,714 (Subject to Section 1.9)

Procedure for Exercise:

Please contact [name of contact person at (phone number)] with any questions you
may have concerning exercise of the Warrant. This is your only notice of pending
expiration.

RELEASE SOFTWARE CORPORATION

By:   ________________________

Its:  ________________________

                                       8
<PAGE>

                                   EXHIBIT A
                                   ---------

                           Anti-Dilution Provisions
                           ------------------------

     In the event of the issuance (a "Diluting Issuance") by the Company, after
the Issue Date of the Warrant, of securities at a price per share less than the
Warrant Price, then the number of shares of common stock issuable upon
conversion of the Shares shall be adjusted in accordance with those provisions
(the "Provisions") of the Company's Articles (Certificate) of Incorporation
which apply to Diluting Issuances.

     Under no circumstances shall the aggregate Warrant Price payable by the
Holder upon exercise of the Warrant increase as a result of any adjustment
arising from a Diluting Issuance.

                                       9
<PAGE>

                                   EXHIBIT B
                                   ---------

                              Registration Rights
                              -------------------

     The Shares shall be deemed "registrable securities" or otherwise entitled
to "piggy back" registration rights in accordance with the terms of the
following agreement (the "Agreement") between the Company and its investor(s):

          Investors' Rights Agreement dated July     , 1997
          -------------------------------------------------

The Company represents and warrants that all consents necessary to make Holder a
party to the Agreement have been obtained.

                                      10

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