Document:

<PAGE>

                                                                    Exhibit 4.11

     THE WARRANT EVIDENCED OR CONSTITUTED HEREBY HAS BEEN, AND ALL SHARES OF
     COMMON STOCK ISSUABLE HEREUNDER MAY BE, ISSUED WITHOUT REGISTRATION UNDER
     THE SECURITIES ACT OF 1933, AS AMENDED ("THE ACT"), AND MAY NOT BE SOLD,
     OFFERED FOR SALE, TRANSFERRED, PLEDGED OR HYPOTHECATED WITHOUT REGISTRATION
     UNDER THE ACT UNLESS (A) THE COMPANY HAS RECEIVED AN OPINION OF COUNSEL, IN
     FORM AND SUBSTANCE REASONABLY SATISFACTORY TO THE COMPANY, TO THE EFFECT
     THAT REGISTRATION IS NOT REQUIRED IN CONNECTION WITH SUCH DISPOSITION, (B)
     THE SALE OF SUCH SECURITIES IS MADE PURSUANT TO SECURITIES AND EXCHANGE
     COMMISSION RULE 144 OR (C) SUCH SHARES OF COMMON STOCK ISSUABLE HEREUNDER
     HAVE BEEN REGISTERED UNDER THE ACT. THIS WARRANT IS ALSO SUBJECT TO
     RESTRICTIONS ON TRANSFER AS PROVIDED HEREIN.

                        WARRANT TO PURCHASE COMMON STOCK
                             OF KANA SOFTWARE, INC.

NO. OF SHARES:  250,000                              WARRANT NO. CS2001A

     THIS WARRANT CERTIFIES THAT, for value received, General Electric Capital
Corporation, a New York corporation (the "Holder") is entitled, subject to the
terms and conditions of this Warrant, at any time or from time to time after
June 30, 2001 (the "Effective Date"), and before 5:00 p.m. Pacific Time on June
30, 2006 (the "Expiration Date"), to purchase from KANA SOFTWARE, Inc., a
Delaware corporation ("Kana" or the "Company"), 250,000 shares of duly
authorized, validly issued, fully paid and nonassessable Common Stock of the
Company (the "Shares") at a price per share equal to Four Dollars ($4.00)
subject to adjustment pursuant to Section 6 hereof (the "Exercise Price").

1.   CERTAIN DEFINITIONS. As used in this Warrant, the following terms shall
have the following respective meanings:

     "Affiliate" means any legal entity that, directly or indirectly through one
      ---------
or more intermediaries, controls, is controlled by, or is under common control
with a party. For this purpose "control" shall mean (i) the direct or indirect
beneficial ownership of fifty percent (50%) or more of the voting or income
interest in such corporation or other business entity or (ii) the possession,
directly or indirectly, of the power to direct or cause the direction of the
management and policies of such corporation or other business entity.

     "Common Stock" shall mean the Company's authorized common stock, par value
      ------------
$0.001 per share.

     "Fair Market Value" of one share of the Company's Common Stock, as of any
      -----------------
date, shall mean the average of the Closing Prices of the Common Stock for the
ten consecutive trading days ending on the day prior to the measurement date.
The "Closing Price" per share of Common Stock for each day shall be the last
     -------------
sale price, regular way, or, in case no such sale takes place on such day, the
average closing bid and asked prices, regular way, in either case as reported in
the principal consolidated transaction reporting system with respect to
securities listed or admitted to trading on the NASDAQ National Market System,

<PAGE>

the New York Stock Exchange or the American Stock Exchange, or any other
nationally recognized exchange, as applicable. If on any such trading day or
days such securities are not quoted by any such organization, such trading day
or days shall be replaced for purposes of the foregoing calculation by the
requisite trading day or days preceding the commencement of such ten trading day
period on which such securities are so quoted. If at any time the Common Stock
is not so listed or traded, the "Fair Market Value" shall be deemed to be the
higher of (a) the book value thereof as determined by any such firm of
independent public accountants of recognized standing selected by the Board of
Directors of the Company as of the last day of any month ending within 60 days
preceding the last date as of which the determination is to be made and (b) the
fair value thereof determined by an independent investment bank selected by the
Board of Directors of the Company and acceptable to the holders of a majority of
the shares issuable upon exercise of the then outstanding Warrants, as of the
most recent practicable date as of which the determination is to be made, taking
into account the value of the Company as a going concern, and without taking
into account any control premium, lack of liquidity, or the fact of ownership of
a minority interest.

     "HSR Act" shall mean the Hart-Scott-Rodino Antitrust Improvements Act of
      -------
1976, as amended, and the implementing regulations issued thereunder.

     "Sale of the Company" shall mean (i) a merger of the Company with or into
      -------------------
any other corporation or corporations (or other person) or a sale of stock of
the Company, in which the stockholders of the Company immediately before the
merger or stock sale do not hold more than 50% of the voting power of the
surviving corporation immediately after the merger or stock sale, (ii) a sale,
conveyance or disposition of all or substantially all of the assets of the
Company, or (iii) a capital reorganization or reclassification of the Common
Stock.

     "Securities Act" shall mean the Securities Act of 1933, as amended.
      --------------

     "Warrant" as used herein, shall include this Warrant and any warrant
      -------
delivered in substitution or exchange therefor as provided herein.

2.   VESTING. The Shares shall be fully vested and exercisable as of the date
hereof.

3.   EXERCISE OF WARRANT

     3.1. Payment. Subject to compliance with the terms and conditions of this
          -------
Warrant and applicable securities laws, this Warrant may be exercised by the
delivery (including, without limitation, delivery by facsimile) of the form of
Notice of Exercise attached hereto as Annex A (the "Notice of Exercise"), duly
executed by the Holder, at the principal office of the Company, and as soon as
practicable after such date, surrendering:

          (a)  this Warrant at the principal office of the Company, and

          (b)  payment, (i) in cash (by check) or by wire transfer, (ii)
by cancellation by the Holder of indebtedness of the Company to the Holder, or
(iii) by a combination of (i) and (ii) (the "Exercise Amount"), except that if
the Holder's exercise of this Warrant is subject to HSR Act filing requirements,
the Exercise Amount shall be paid to the Company within five (5) business days
of the termination of all applicable HSR Act waiting periods.

     3.2. Net Issue Exercise. In lieu of the payment methods set forth in
          ------------------
Section 3.1(b) above, the Holder may elect to exercise all or some of the
Warrant and receive Shares equal to the value of the amount of the Warrant being
exercised on the date of exercise. If the Holder elects to exercise this

                                      -2-

<PAGE>

Warrant as provided in this Section 3.2, the Holder shall tender to the Company
the Warrant for the amount being exercised, along with written notice of the
Holder's election to exchange some or all of the Warrant, and the Company shall
issue to the Holder the number of Shares computed using the following formula:

          X = Y (A-B)
              -------
                A

          Where X = the number of Shares to be issued to the Holder.

          Y = the number of Shares under the Warrant that are being exercised
(as adjusted to the date of such calculation).

          A = the then Fair Market Value of one share of the Common Stock.

          B = the Exercise Price (as adjusted to the date of such calculation).

All references herein to an "exercise" of the Warrant shall include an exchange
pursuant to this Section 3.2.

     3.3. Stock Certificates; Fractional Shares. As soon as practicable on or
          -------------------------------------
after the date this Warrant is exercised, the Company shall issue and deliver to
the Holder a certificate or certificates for the number of whole Shares issuable
upon such exercise, together with cash in lieu of any fraction of a share equal
to such fraction of the then Fair Market Value of one whole share of Common
Stock as of the date of exercise of this Warrant. No fractional shares or scrip
representing fractional shares shall be issued upon an exercise of this Warrant.

     3.4. Partial Exercise; Effective Date of Exercise. In case of any partial
          --------------------------------------------
exercise of this Warrant, the Company shall cancel this Warrant upon surrender
hereof and shall execute and deliver a new Warrant of like tenor and date for
the balance of the Shares purchasable hereunder. This Warrant shall be deemed to
have been exercised immediately prior to the close of business on the date of
its surrender for exercise as provided above. However, if Holder's exercise of
this Warrant is subject to HSR Act filing requirements, this Warrant shall be
deemed to have been exercised on the date immediately following the date of the
expiration of all applicable HSR Act waiting period restrictions. The person
entitled to receive the Shares issuable upon exercise of this Warrant shall be
treated for all purposes as the holder of record of such shares as of the close
of business on the date the Holder is deemed to have exercised this Warrant.

     3.5. Sale of the Company. In the event of a Sale of the Company, the
          -------------------
Company shall give written notice to the Holder of such Sale of the Company not
less than thirty (30) days prior to the anticipated closing date thereof. The
surviving company from any Sale of the Company or the Company shall make proper
and adequate provision so that the Holder, upon the exercise of these Warrants
at any time after the consummation of such Sale of the Company, shall be
entitled to purchase, in lieu of the Shares issuable upon such exercise prior to
such consummation, the stock and other securities and property that such Holder
would have been entitled to purchase upon such consummation if the Warrants had
been exercised immediately prior thereto, all subject to adjustment as provided
in Section 6 hereof. Except as provided in Section 3.6 below, upon any Sale of
the Company, these Warrants shall continue in full force and effect and the
terms hereof shall be applicable to the shares of stock and other securities and
property receivable on the exercise of the Warrants after the consummation of
such Sale of the Company and shall be binding upon the issuer of any such stock
or other securities, whether or not such person shall have expressly assumed the
terms of these Warrants.

                                      -3-

<PAGE>

     3.6. Dissolution of the Company. If the Company shall propose to effect the
liquidation, dissolution or winding up of the Company, the Company shall give
Holder notice (as provided for herein) of such decision and Holder shall have at
least thirty (30) days after the date of receipt of such notice to exercise
these Warrants.

4.   VALID ISSUANCE; TAXES. All Shares issued upon the exercise of this Warrant
shall be validly issued, fully paid and nonassessable. The Company shall pay all
expenses, taxes, and other charges payable in connection with the preparation,
issue, and delivery of such stock certificate(s). The Company shall not be
required to pay any tax or other charge imposed in connection with any transfer
involved in the issuance of any certificate for the Shares in any name other
than that of the Holder of this Warrant, and in such case the Company shall not
be required to issue or deliver any stock certificate or security until such tax
or other charge has been paid, or it has been established to the Company's
reasonable satisfaction that no tax or other charge is due.

5.   LOSS OR MUTILATION. Upon receipt of evidence reasonably satisfactory to the
Company of the ownership of and the loss, theft, destruction or mutilation of
this Warrant, and of indemnity reasonably satisfactory to it, and (in the case
of mutilation) upon surrender and cancellation of this Warrant, the Company will
execute and deliver in lieu thereof a new Warrant of like tenor as the lost,
stolen, destroyed or mutilated Warrant.

6.   ADJUSTMENTS. If the Company shall at any time prior to the expiration of
this Warrant subdivide its Common Stock, by split-up or otherwise, or combine
its capital stock, or issue additional securities as a dividend with respect to
any shares of its Common Stock, the number of Shares issuable on the exercise of
this Warrant shall forthwith be proportionately increased in the case of a
subdivision or stock dividend, or proportionately decreased in the case of a
combination. Appropriate adjustments shall also be made to the Exercise Price,
but the aggregate Exercise Price payable for the total number of Shares
purchasable under this Warrant (as adjusted) shall remain the same. Any
adjustment under this Section 6 shall become effective at the close of business
on the date the subdivision or combination becomes effective, or as of the
record date of such dividend, or in the event that no record date is fixed, upon
the making of such dividend. In case of any capital reorganization or any
reclassification of the capital stock of the Company while this Warrant remains
outstanding, the Holder of this Warrant shall thereafter be entitled to purchase
pursuant to this Warrant (in lieu of the kind and number of shares of Common
Stock comprising Shares that such Holder would have been entitled to purchase or
acquire immediately before such reorganization or reclassification) the kind and
number of shares of stock of any class or classes or other securities or
property for or into which such shares of Common Stock would have been
exchanged, converted, or reclassified if the Shares had been purchased
immediately before such reorganization or reclassification. In case of any such
reorganization or reclassification, appropriate provision (as determined by
resolution of the Board of Directors of the Company ) shall be made with respect
to the rights and interest thereafter of the Holder of this Warrant, to the end
that all the provisions of this Warrant (including the adjustment provisions of
this Section 6) shall thereafter be applicable, as nearly as reasonably
practicable, in relation to such stock or other securities or property. Whenever
the number or kind of shares comprising the Shares or the Exercise Price is
adjusted pursuant to this Section 6, the Company shall promptly give notice to
the holder of record of the outstanding warrant, stating that such an adjustment
has been effected and setting forth the number and kind of shares purchasable
and the amount of the then-current Exercise Price, and stating in reasonable
detail the facts requiring such adjustment and the calculation of such
adjustment.

7.   RESERVATION OF COMMON STOCK. The Company hereby covenants that at all times
there shall be reserved for issuance and delivery upon exercise of this Warrant
such number of shares of Common Stock or other shares of capital stock of the
Company as are from time to time issuable upon exercise of this Warrant and,
from time to time, will take all steps necessary to amend its Certificate of

                                      -4-

<PAGE>

Incorporation to provide sufficient reserves of shares of Common Stock issuable
upon exercise of this Warrant. All such shares shall be duly authorized, and
when issued upon such exercise, shall be validly issued, fully paid and
nonassessable, free and clear of all liens, security interests, charges and
other encumbrances or restrictions on sale and free and clear of all preemptive
rights, except encumbrances or restrictions arising under federal or state
securities laws. Issuance of this Warrant shall constitute full authority to the
Company's officers who are charged with the duty of executing stock certificates
to execute and issue the necessary certificates for Shares upon the exercise of
this Warrant.

8.   ACCREDITED INVESTOR. Holder certifies and represents to the Company that at
the time Holder acquires any of the Shares, Holder will be an institutional
purchaser that is an "Accredited Investor" as defined in Rule 501 of Regulation
D promulgated under the Securities Act and was not organized for the purpose of
acquiring the Shares. Holder's financial condition is such that it is able to
bear the risk of holding the Shares for an indefinite period of time and the
risk of loss of its entire investment.

9.   TRANSFER AND EXCHANGE. This Warrant shall not be transferable except (a) in
the event of a sale of the Holder or (b) to any Affiliate of the Holder. In the
event of a transfer of this Warrant in whole or in part, the Company shall
deliver a new Warrant to the transferee and the Holder, if applicable, with
respect to the number of Shares for which this Warrant may then be exercisable.
Any extraordinary costs resulting from such transfers (including, without
limits, reasonable cost of legal and tax advisors for domestic and international
law compliance, registration costs, etc.) shall be borne by Holder.

10.  SECURITIES LAW RESTRICTIONS. The Holder, by acceptance hereof, agrees that,
absent an effective registration statement filed with the Securities and
Exchange Commission (the "SEC") under the Securities Act, covering the
disposition or sale of this Warrant or the Shares issued or issuable upon
exercise hereof, as the case may be, and registration or qualification under
applicable state securities laws, such Holder will not sell, pledge, hypothecate
or otherwise transfer any or all such Warrants or Shares, as the case may be, or
any interest therein unless either (i) the Company has received an opinion of
counsel, in form and substance reasonably satisfactory to the Company, to the
effect that such registration is not required in connection with such
disposition or (ii) the sale of such securities is made pursuant to SEC Rule
144.

11.  COMPLIANCE WITH SECURITIES LAWS. By acceptance of this Warrant, the Holder
hereby represents, warrants and covenants that any Shares purchased upon
exercise of this Warrant or acquired upon conversion thereof shall be acquired
for investment only and not with a view to, or for sale in connection with, any
distribution thereof; and that, unless the Shares shall have been registered
with the SEC under the Securities Act, all stock certificates representing
Shares issued to the Holder upon exercise of this Warrant or upon conversion of
such Shares may have affixed thereto a legend substantially in the following
form:

     "THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED
     UNDER THE SECURITIES ACT OF 1933 AND MAY NOT BE OFFERED, SOLD, ASSIGNED,
     PLEDGED TRANSFERRED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF AN EFFECTIVE
     REGISTRATION STATEMENT UNDER SAID ACT OR PURSUANT TO AN AVAILABLE EXEMPTION
     FROM REGISTRATION UNDER SAID ACT. THE COMPANY MAY REQUIRE DELIVERY OF AN
     OPINION OF COUNSEL REASONABLY SATISFACTORY TO THE COMPANY THAT ANY PROPOSED
     TRANSFER IS EXEMPT FROM OR IN COMPLIANCE WITH SAID ACT AND ANY APPLICABLE
     STATE SECURITIES LAW."

                                      -5-

<PAGE>

12.  NO RIGHTS OR LIABILITIES AS STOCKHOLDER. This Warrant shall not entitle the
Holder to any voting rights or other rights as a stockholder of the Company. In
the absence of affirmative action by such Holder to purchase Shares by exercise
of this Warrant, no provisions of this Warrant, and no enumeration herein of the
rights or privileges of the Holder hereof, shall cause such Holder hereof to be
a stockholder of the Company for any purpose.

13.  NOTICES. Any notices, reports or other correspondence (hereinafter
collectively referred to as "correspondence") required or permitted to be given
hereunder shall be sent by postage prepaid first class mail, courier or telecopy
or delivered by hand to the party to whom such correspondence is required or
permitted to be given hereunder. Notices given to Holder shall be addressed to
Beverly Belcamino, Senior Counsel at 1600 Summer Street, 5th Floor, Stamford, CT
06905. The date of giving any notice shall be the date of its actual receipt.

14.  HEADINGS. The headings in this Warrant are for purposes of convenience in
reference only, and shall not be deemed to constitute a part hereof.

15.  GOVERNING LAW. This Warrant shall be construed and enforced in accordance
with, and governed by, the laws of the State of Delaware.

16.  SEVERABILITY. If any term, provision, covenant or restriction of this
Warrant is held by a court of competent jurisdiction to be invalid, void or
unenforceable, the remainder of the terms, provisions, covenants and
restrictions of this Warrant shall remain in full force and effect and shall in
no way be affected, impaired or invalidated.

17.  SATURDAYS, SUNDAYS AND HOLIDAYS; CURRENCY. If the Expiration Date falls on
a Saturday, Sunday or legal holiday in the State of New York, the Expiration
Date shall automatically be extended until 5:00 p.m. the next business day. All
monetary references herein are in the currency of the United States.

18.  WILL AVOID CERTAIN ACTIONS. The Company will not, by amendment of its
certificate of incorporation or through any reorganization, transfer of assets,
consolidation, merger, issue or sale of securities or otherwise, avoid or take
any action which would have the effect of avoiding the observance or performance
of any of the terms to be observed or performed hereunder by the Company, but
will at all times in good faith assist in carrying out all of the provisions of
this Warrant and in the taking of all such action as may be necessary or
appropriate in order to protect the rights of the registered holder of this
Warrant against dilution or other impairment. The Company will at no time close
its transfer books against the transfer of this Warrant or of any of the Shares
issued or issuable upon the exercise of this Warrant in any manner which
interferes with the timely exercise of this Warrant.

                                      -6-

<PAGE>

     IN WITNESS WHEREOF, the Company and the Holder have executed this Warrant
as of August 7, 2001.

                                     KANA SOFTWARE, INC.

                                     By:   /s/
                                        --------------------------------------
                                         Name:
                                         Title:

                                     GENERAL ELECTRIC CAPITAL CORPORATION

                                     By:   /s/
                                        --------------------------------------
                                         Name:
                                         Title:

                                    Address: 260 Long Ridge Road
                                    Stamford, Connecticut 06927

<PAGE>

                                     Annex A
                                     -------

                               NOTICE OF EXERCISE

                    (To be executed upon exercise of Warrant)

KANA SOFTWARE, INC.                                         WARRANT NO. CS-____A

The undersigned hereby irrevocably elects to exercise the right of purchase
represented by the within Warrant for, and to purchase thereunder, the
securities of KANA SOFTWARE, Inc. as provided for therein, and (check the
applicable box):

[_]   Tenders herewith payment of the exercise price in the form of cash, check,
      wire transfer, or exchange of stock, in the amount of $____________ for
      _________ such securities.

[_]   Elects the Net Issue Exercise option pursuant to Section 3.2 of the
      Warrant, and accordingly converts the attached Warrant into _______ shares
     of Common Stock in the manner specified Section 3.2.

Please issue a certificate or certificates for such securities in the name of,
and pay any cash for any fractional share to (please print name, address and
social security number):

Name:      ____________________________________________________________

Address:   ____________________________________________________________

Signature: ____________________________________________________________

Dated:     ____________________________________________________________

Note:  The above signature should correspond exactly with the name on the first
page of this Warrant.

If said number of shares shall not be all the shares purchasable under the
within Warrant, a new Warrant is to be issued in the name of said undersigned
for the balance remaining of the shares purchasable thereunder rounded up to the
next higher whole number of shares.<PAGE>

                                                                    Exhibit 4.12

     THE WARRANT EVIDENCED OR CONSTITUTED HEREBY HAS BEEN, AND ALL SHARES OF
     COMMON STOCK ISSUABLE HEREUNDER MAY BE, ISSUED WITHOUT REGISTRATION UNDER
     THE SECURITIES ACT OF 1933, AS AMENDED ("THE ACT"), AND MAY NOT BE SOLD,
     OFFERED FOR SALE, TRANSFERRED, PLEDGED OR HYPOTHECATED WITHOUT REGISTRATION
     UNDER THE ACT UNLESS (A) THE COMPANY HAS RECEIVED AN OPINION OF COUNSEL, IN
     FORM AND SUBSTANCE REASONABLY SATISFACTORY TO THE COMPANY, TO THE EFFECT
     THAT REGISTRATION IS NOT REQUIRED IN CONNECTION WITH SUCH DISPOSITION, (B)
     THE SALE OF SUCH SECURITIES IS MADE PURSUANT TO SECURITIES AND EXCHANGE
     COMMISSION RULE 144 OR (C) SUCH SHARES OF COMMON STOCK ISSUABLE HEREUNDER
     HAVE BEEN REGISTERED UNDER THE ACT. THIS WARRANT IS ALSO SUBJECT TO
     RESTRICTIONS ON TRANSFER AS PROVIDED HEREIN.

            WARRANT TO PURCHASE COMMON STOCK OF KANA SOFTWARE, INC.

WARRANT NO. CS2000B

     THIS CERTIFIES THAT, for value received, Banca 121("Banca 121" or the
"Holder") is entitled, subject to the terms and conditions of this Warrant, at
any time or from time to time after September 5, 2001 (the "Effective Date"),
and before 5:00 p.m. Pacific Time onSeptember 5, 2006 (the "Expiration Date"),
to purchase from Kana Software, Inc., a Delaware corporation ("Kana" or the
"Company"), 50,000 shares of common stock of the Company (the "Shares") subject
to the exercise schedule set forth in Section 2 hereof , at a price per share
equal to $0.75 (the "Exercise Price") subject to adjustment pursuant to Section
6 hereof.

1.   CERTAIN DEFINITIONS. As used in this Warrant, the following terms shall
have the following respective meanings:

     "Affiliate" means a legal entity that Banca 121, directly or indirectly
      ---------
through one or more banking intermediaries, controls. For this purpose "control"
shall mean direct or indirect beneficial ownership of fifty percent (50%) or
more of the voting or income interest in such corporation or other business
entity. "Alliance Agreement" shall mean the Restated Master Alliance Agreement
         ------------------
by and between the parties of even date herewith.

     "Fair Market Value" of one share of the Company's Common Stock, as of any
      -----------------
date, shall mean the average of the closing prices of the Common Stock then
quoted on the Nasdaq Stock Market for the ten trading days ending on the day
prior to the measurement date.

     "Sale of the Company" shall mean a merger of the Company with or into any
      -------------------
other corporation or corporations (or other person) or a sale of stock of the
Company, in which the stockholders of this Company immediately before the merger
or stock sale do not hold more than 50% of the voting power of the surviving
corporation immediately after the merger or stock sale, or a sale, conveyance or
disposition of all or substantially all of the assets of this Company.

<PAGE>

     "Warrant" as used herein, shall include this Warrant and any warrant
      -------
delivered in substitution or exchange therefor as provided herein.

2.   EXERCISE SCHEDULE.

     2.1  50,000 shares of the Company's Common Stock (the "Shares") is
available under this Warrant.

     2.2  The Shares shall be fully vested as of the date hereof, and shall be
fully-exercisable on September 5, 2006.

     2.3  The exercisability of the Warrant shall accelerate according to
schedule in part (b) below provided that Holder fulfills the obligations set
forth in part (a):

          (a)  Holder agrees during the term of this Warrant: (i) that Kana may
               use Holder's name as a reference, including without limitation,
               use of Holder's name in any Kana customer lists; on Kana's
               website; and on other promotional materials; (ii) Holder further
               agrees to allow Kana to use Holder's name in a press release that
               is mutually agreed upon in writing, which agreement by Holder
               shall not be unreasonably withheld or delayed; (iii) Holder shall
               place the "Powered by Kana" logo on Holder's website; (iv) Holder
               shall provide Kana with written or videotaped comments which Kana
               may use in promotional materials; (v) Holder shall periodically
               discuss the Product and support provided by Kana with potential
               Kana customers upon Kana's request; and periodically allow
               potential Kana customers to visit Holder's facilities for the
               purpose of demonstrating the use of the Product; (vi) the Holder
               shall use reasonable efforts to allow Kana to be the exclusive
               provider of e-business solutions to Holder and all affiliates of
               Holder; and (v) Holder shall use commercially reasonable efforts
               to refer to Kana at least ten (10) significant additional
               customers during the term of this Agreement.

          (b)  Subject to Holder's fulfillment of 2.3(a), the exercise schedule
               of the Warrant shall accelerate as follows:

<TABLE>
<CAPTION>
               --------------------------------------------------------------------------
               On October 31,       On October 31,      On October 31,     On October 31,
               2001                 2002                2003               2004
               --------------------------------------------------------------------------
               <S>                  <C>                 <C>                <C>
               12,500 Shares        12,500 Shares       12,500 Shares      12,500 Shares
               --------------------------------------------------------------------------
</TABLE>

     2.4 Forfeiture/Penalty. To the extent that the Holder has failed to meet
the obligations set forth in section 2.2 (a) of this Agreement for any Period,
the number of Shares that Holder may exercise for the next Period will be
adjusted downward to the extent of 12,500 shares ("Forfeited Shares")

<PAGE>

     2.5 The Company shall provide the Holder with a written notice setting
forth the number of Shares that the Holder may exercise and the number of
Forfeited Shares for the applicable Period (or portion thereof) and the total
Shares then issuable upon exercise of this Warrant on each of the following
dates: (i) within thirty (30) days following the end of each Period, (ii) at
least thirty (30) days prior to the completion of a Sale of the Company, and
(iii) not more than once each Period, within thirty (30) days of the Holder's
written request, as of the end of the quarter reflected in the Holder's request.

3.   EXERCISE OF WARRANT

     3.1. Payment. Subject to compliance with the terms and conditions of this
          -------
Warrant and applicable securities laws, this Warrant may be exercised by the
delivery (including, without limitation, delivery by facsimile) of the form of
Notice of Exercise attached hereto as Annex A (the "Notice of Exercise"), duly
executed by the Holder, at the principal office of the Company, and as soon as
practicable after such date, surrendering:

          (a) this Warrant at the principal office of the Company, and

          (b) payment, (i) in cash (by check) or by wire transfer, (ii) by
cancellation by the Holder of indebtedness of the Company to the Holder, or
(iii) by a combination of (i) and (ii) (the "Exercise Amount"), except that if
the Holder is subject to HSR Act filing requirements, the Exercise Amount shall
be paid to the Company within five (5) business days of the termination of all
applicable HSR Act restrictions.

     3.2. Net Issue Exercise. In lieu of the payment methods set forth in
          ------------------
Section 3.1(b) above, the Holder may elect to exercise all or some of the
Warrant and receive Shares equal to the value of the amount of the Warrant being
exercised on the date of exercise. If the Holder elects to exercise this Warrant
as provided in this Section 3.2, the Holder shall tender to the Company the
Warrant for the amount being exercised, along with written notice of the
Holder's election to exchange some or all of the Warrant, and the Company shall
issue to the Holder the number of Shares computed using the following formula:

          X = Y (A-B)
              -------
                 A

          Where X = the number of Shares to be issued to the Holder.

          Y = the number of vested Shares under the Warrant that are being
          exercised (as adjusted to the date of such calculation).

          A = the then Fair Market Value of one share of the Common Stock.

          B = the Exercise Price (as adjusted to the date of such calculation).

<PAGE>

All references herein to an "exercise" of the Warrant shall include an exchange
pursuant to this Section 3.2.

     3.3. Stock Certificates; Fractional Shares. As soon as practicable on or
          -------------------------------------
after the date this Warrant is exercised, the Company shall issue and deliver to
the Holder a certificate or certificates for the number of whole Shares issuable
upon such exercise, together with cash in lieu of any fraction of a share equal
to such fraction of the then Fair Market Value of one whole share of Common
Stock as of the date of exercise of this Warrant. No fractional shares or scrip
representing fractional shares shall be issued upon an exercise of this Warrant.

     3.4. Partial Exercise; Effective Date of Exercise. In case of any partial
          --------------------------------------------
exercise of this Warrant, the Company shall cancel this Warrant upon surrender
hereof and shall execute and deliver a new Warrant of like tenor and date for
the balance of the Shares purchasable hereunder. This Warrant shall be deemed to
have been exercised immediately prior to the close of business on the date of
its surrender for exercise as provided above. However, if Holder is subject to
HSR Act filing requirements, this Warrant shall be deemed to have been exercised
on the date immediately following the date of the expiration of all applicable
HSR Act restrictions. The person entitled to receive the Shares issuable upon
exercise of this Warrant shall be treated for all purposes as the holder of
record of such shares as of the close of business on the date the Holder is
deemed to have exercised this Warrant.

     3.5  Sale of the Company. In the event of a Sale of the Company, the
          -------------------
Company shall give written notice to the Holder of such Sale of the Company not
less than thirty (30) days prior to the anticipated closing date thereof. The
surviving company from any Sale of the Company will have to respect all the
conditions of the present agreement. The surviving company from any Sale of the
Company (or the Company at the request of the Sale of the Company) may, at
anytime prior to thirty (30) days following the closing date of the Sale of the
Company, terminate this Warrant by providing thirty (30) days written notice of
termination. During such thirty (30) day period after the notice (or such longer
period if required by HSR restrictions), Holder may exercise the Warrant with
respect to any vested and unexercised Shares. Upon termination, all Shares not
exercised shall be forfeited.

4.   VALID ISSUANCE: TAXES. All Shares issued upon the exercise of this Warrant
shall be validly issued, fully paid and nonassessable. The Company shall not be
required to pay any tax or other charge imposed in connection with any transfer
involved in the issuance of any certificate for the Shares in any name other
than that of the Holder of this Warrant, and in such case the Company shall not
be required to issue or deliver any stock certificate or security until such tax
or other charge has been paid, or it has been established to the Company's
reasonable satisfaction that no tax or other charge is due.

5.   LOSS OR MUTILATION. Upon receipt of evidence reasonably satisfactory to the
Company of the ownership of and the loss, theft, destruction or mutilation of
this Warrant, and of indemnity reasonably satisfactory to it, and (in the case
of mutilation) upon surrender and cancellation of this Warrant, the Company will
execute and deliver in lieu thereof a new Warrant of like tenor as the lost,
stolen, destroyed or mutilated Warrant.

<PAGE>

6.   ADJUSTMENTS. If the Company shall at any time prior to the expiration of
this Warrant subdivide its Common Stock, by split-up or otherwise, or combine
its capital stock, or issue additional securities as a dividend with respect to
any shares of its Common Stock, the number of Shares issuable on the exercise of
this Warrant shall forthwith be proportionately increased in the case of a
subdivision or stock dividend, or proportionately decreased in the case of a
combination. Appropriate adjustments shall also be made to the Exercise Price,
but the aggregate Exercise Price payable for the total number of Shares
purchasable under this Warrant (as adjusted) shall remain the same. Any
adjustment under this Section 6 shall become effective at the close of business
on the date the subdivision or combination becomes effective, or as of the
record date of such dividend, or in the event that no record date is fixed, upon
the making of such dividend.

7.   RESERVATION OF COMMON STOCK. The Company hereby covenants that at all times
there shall be reserved for issuance and delivery upon exercise of this Warrant
such number of shares of Common Stock or other shares of capital stock of the
Company as are from time to time issuable upon exercise of this Warrant and,
from time to time, will take all steps necessary to amend its Certificate of
Incorporation to provide sufficient reserves of shares of Common Stock issuable
upon exercise of this Warrant. All such shares shall be duly authorized, and
when issued upon such exercise, shall be validly issued, fully paid and
nonassessable, free and clear of all liens, security interests, charges and
other encumbrances or restrictions on sale and free and clear of all preemptive
rights, except encumbrances or restrictions arising under federal or state
securities laws. Issuance of this Warrant shall constitute full authority to the
Company's officers who are charged with the duty of executing stock certificates
to execute and issue the necessary certificates for Shares upon the exercise of
this Warrant.

8.   ACCREDITED INVESTOR. Purchaser certifies and represents to the Company that
at the time Purchaser acquires any of the Securities, Purchaser will be an
institutional Purchaser that is an "Accredited Investor" as defined in Rule 501
of Regulation D promulgated under the Securities Act and was not organized for
the purpose of acquiring the Securities. Purchaser's financial condition is such
that it is able to bear the risk of holding the Securities for an indefinite
period of time and the risk of loss of its entire investment

9.   TRANSFER AND EXCHANGE. This Warrant shall not be transferable except in the
event of a Sale of the Holder or to any Affiliate of the Holder. In the event of
a transfer of this Warrant in whole or in part, the Company shall deliver a new
Warrant to the transferee and the Holder, if applicable, with respect to the
number of Shares for which this Warrant may then be exercisable. Any
extraordinary costs resulting from such transfers (including, without limits,
reasonable cost of legal and tax advisors for domestic and international law
compliance, registration costs, etc.) shall be borne by Holder.

10.  SECURITIES LAW RESTRICTIONS. The Holder, by acceptance hereof, agrees that,
absent an effective registration statement filed with the Securities and
Exchange Commission (the "SEC") under the 1933 Act, covering the disposition or
sale of this Warrant or the Shares issued or issuable upon exercise hereof, as
the case may be, and registration or qualification under applicable state
securities laws, such Holder will not sell, pledge, hypothecate or otherwise
transfer any or all such Warrants or Shares, as the case may be, or any interest
therein unless either (i) the Company has received an opinion of counsel, in
form and substance reasonably

<PAGE>

satisfactory to the Company, to the effect that such registration is not
required in connection with such disposition or (ii) the sale of such securities
is made pursuant to SEC Rule 144.

11.  COMPLIANCE WITH SECURITIES LAWS. By acceptance of this Warrant, the Holder
hereby represents, warrants and covenants that any Shares purchased upon
exercise of this Warrant or acquired upon conversion thereof shall be acquired
for investment only and not with a view to, or for sale in connection with, any
distribution thereof; and that, unless the Shares shall have been registered
with the SEC under the 1933 Act, all stock certificates representing Shares
issued to the Holder upon exercise of this Warrant or upon conversion of such
Shares may have affixed thereto a legend substantially in the following form:

     "THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED
     UNDER THE SECURITIES ACT OF 1933 AND MAY NOT BE OFFERED, SOLD, ASSIGNED,
     PLEDGED TRANSFERRED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF AN EFFECTIVE
     REGISTRATION STATEMENT UNDER SAID ACT OR PURSUANT TO AN AVAILABLE EXEMPTION
     FROM REGISTRATION UNDER SAID ACT. THE COMPANY MAY REQUIRE DELIVERY OF AN
     OPINION OF COUNSEL REASONABLY SATISFACTORY TO THE COMPANY THAT ANY PROPOSED
     TRANSFER IS EXEMPT FROM OR IN COMPLIANCE WITH SAID ACT AND ANY APPLICABLE
     STATE SECURITIES LAW."

12.  NO RIGHTS OR LIABILITIES AS STOCKHOLDER. This Warrant shall not entitle the
Holder to any voting rights or other rights as a stockholder of the Company. In
the absence of affirmative action by such Holder to purchase Shares by exercise
of this Warrant, no provisions of this Warrant, and no enumeration herein of the
rights or privileges of the Holder hereof, shall cause such Holder hereof to be
a stockholder of the Company for any purpose.

13.  NOTICES. Any notices, reports or other correspondence (hereinafter
collectively referred to as "correspondence") required or permitted to be given
hereunder shall be sent by postage prepaid first class mail, courier or telecopy
or delivered by hand to the party to whom such correspondence is required or
permitted to be given hereunder. The date of giving any notice shall be the date
of its actual receipt.

14.  HEADINGS. The headings in this Warrant are for purposes of convenience in
reference only, and shall not be deemed to constitute a part hereof.

15.  LAW GOVERNING. This Warrant shall be construed and enforced in accordance
with, and governed by, the laws of the State of Delaware.

16.  SEVERABILITY. If any term, provision, covenant or restriction of this
Warrant is held by a court of competent jurisdiction to be invalid, void or
unenforceable, the remainder of the terms, provisions, covenants and
restrictions of this Warrant shall remain in full force and effect and shall in
no way be affected, impaired or invalidated.

17.  SATURDAYS, SUNDAYS AND HOLIDAYS; CURRENCY. If the Expiration Date falls on
a Saturday, Sunday or legal holiday in the State of California, the Expiration
Date shall

<PAGE>

automatically be extended until 5:00 p.m. the next business day. All monetary
references herein are in the currency of the United States.

     IN WITNESS WHEREOF, the Company and the Holder have executed this Warrant
as of September 5, 2001.

                                    KANA SOFTWARE, INC.

                                    By:   /s/
                                       --------------------------------------
                                        Name:
                                        Title:

                                    BANCA 121

                                    By:   /s/
                                       --------------------------------------
                                        Name:
                                        Title:

                                    Banca 121

                                    With a copy to:

                                    Banca 121

<PAGE>

Annex A
-------

NOTICE OF EXERCISE

(To be executed upon exercise of Warrant)

KANA SOFTWARE, INC.                       WARRANT NO. CS-____A

The undersigned hereby irrevocably elects to exercise the right of purchase
represented by the within Warrant for, and to purchase thereunder, the
securities of Kana Software, Inc. as provided for therein, and (check the
applicable box):

[_]   Tenders herewith payment of the exercise price in the form of cash, check,
      wire transfer, or exchange of stock, in the amount of $____________ for
      _________ such securities.

[_]   Elects the Net Issue Exercise option pursuant to Section 3.2 of the
      Warrant, and accordingly converts the attached Warrant into _______ shares
     of Common Stock in the manner specified Section 3.2.

Please issue a certificate or certificates for such securities in the name of,
and pay any cash for any fractional share to (please print name, address and
social security number):

Name:       ___________________________________________________________

Address:    ___________________________________________________________

Signature:  ___________________________________________________________

Dated:      ___________________________________________________________

Note:  The above signature should correspond exactly with the name on the first
page of this Warrant.

If said number of shares shall not be all the shares purchasable under the
within Warrant, a new Warrant is to be issued in the name of said undersigned
for the balance remaining of the shares purchasable thereunder rounded up to the
next higher whole number of shares.

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