As filed with the Securities and Exchange Commission on May 29, 2001
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                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549
                        ______________________________
                                  SCHEDULE TO
                               (Amendment No. 1)
            Tender Offer Statement under Section 14(d)(1) or 13(e)
                    of the Securities Exchange Act of 1934

                           ________________________
                           Chordiant Software, Inc.
          (Name of Subject Company-Issuer and Filing Person-Offeror)
                           ________________________
                       Options to Purchase Common Stock,
                          par value $0.001 per share
                        (Title of Class of Securities)
                           ________________________
                                   170404107
                     (CUSIP Number of Class of Securities)
                           ________________________
                              Samuel T. Spadafora
                     Chairman and Chief Executive Officer
                           Chordiant Software, Inc.
                     20400 Stevens Creek Blvd., Suite 400
                          Cupertino, California 95014
                          Telephone: (408) 517 - 6100
      (Name, address and telephone number of person authorized to receive
            notices and communications on behalf of Filing Person)
                             ____________________
                                  Copies to:
                             Nancy H. Wojtas, Esq.
                              Cooley Godward LLP
                  Five Palo Alto Square, 3000 El Camino Real
                       Palo Alto, California 94306-2155
                           Telephone: (650) 843-5000


                           CALCULATION OF FILING FEE

================================================================================
Transaction Valuation*                  Amount of Filing Fee**
--------------------------------------------------------------------------------
$56,548,849.64                          $11,309.77***
================================================================================

* Calculated solely for purposes of determining the filing fee. This amount
assumes that options to purchase 10,730,332 shares of common stock of Chordiant
Software, Inc. having a weighted average exercise price of $5.270 as of May
1,2001 will be exchanged pursuant to this offer.
** One-fiftieth of 1% of the value of the transaction, pursuant to Rule 0-11 of
the Securities Exchange Act.
*** Previously paid.

   [_]  Check box if any part of the fee is offset as provided by Rule 0-
   11(a)(2) and identify the filing with which the offsetting fee was previously
   paid.
   Identify the previous filing by registration statement number, or the form or
   schedule and the date of its filing.

        Amount Previously Paid:   Not applicable.  Filing Party: Not applicable.
        Form or Registration No.: Not applicable.  Date Filed:   Not applicable.

   [_]  Check the box if the filing relates solely to preliminary communications
   made before the commencement of a tender offer.

   Check the appropriate boxes below to designate any transactions to which the
   statement relates:

   [_]  Third-party tender offer subject to Rule 14d-1.
   [X]  Issuer tender offer subject to Rule 13e-4.
   [_]  Going-private transaction subject to Rule 13e-3.
   [_]  Amendment to Schedule 13D under Rule 13d-2.

   [_]  Check the following box if the filing is a final amendment reporting the
        results of the tender offer


     This Amendment No. 1 to the Tender Offer Statement on Schedule TO amends
and supplements the Tender Offer Statement on Schedule TO (the "Schedule TO")
filed with the Securities and Exchange Commission on May 4, 2001, relating to
the offer by Chordiant Software Inc., a Delaware Corporation (the "Company"), to
exchange all options ("Options") outstanding under the Chordiant 1999 Equity
Incentive Plan, the Chordiant 1999 Non-Employee Directors' Stock Option Plan,
the Chordiant 2000 Nonstatutory Equity Incentive Plan, the White Spider Software
2000 Stock Incentive Plan and the Prime Response 2000 Stock Option/Stock
Issuance Plan to purchase shares of the Company's common stock, par value $ .01
per share (the "Common Stock"), for new options (the "New Options") to purchase
shares of the Common Stock to be granted under the Chordiant 1999 Equity
Incentive Plan and the Chordiant 2000 Nonstatutory Equity Incentive Program,
upon the terms and subject to the conditions described in the Offer to Exchange,
dated May 4, 2001 (the "Offer to Exchange"), the related Summary of Terms (the
"Summary of Terms") and the related Election Form (the "Election Form" and
together with the Offer to Exchange and the Summary of Terms, the "Offer").

ITEM 8.     INTERESTS IN THE SECURITIES OF THE SUBJECT COMPANY.

       Item 8 is hereby amended and supplemented to add the following paragraph
       (a):

       (a)  Securities Ownership. The information set forth under Section 9 of
            the Offer to Exchange ("Interests of Directors and Officers;
            Transactions and Arrangements Involving the Options"), Schedule A of
            the Offer to Exchange ("Information About the Directors and
            Executive Officers of Chordiant") and the section entitled "Security
            Ownership of Certain Beneficial Owners and Management" in Chordiant
            Software, Inc.'s Definitive Proxy Statement on Schedule 14A filed
            April 20, 2001 is incorporated herein by reference.


       [Remainder of  this page intentionally left blank.]


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CUSIP NO. 170404107
--------------------

                                  Schedule TO


 ITEM 12.        EXHIBITS.

 Item 12 of the Schedule TO is hereby amended and restated as follows:


    Exhibit
     Number                         Description
--------------   ---------------------------------------------------------------
 99.(a)(1)(A)*   Offer to Exchange, dated May 4, 2001.

 99.(a)(1)(B)*   Summary of Terms.

 99.(a)(1)(C)*   E-mail Transmittal Letter.

 99.(a)(1)(D)*   Form of Election Form.

 99.(a)(1)(E)*   Form of Notice of Change in Election from Accept to Reject.

 99.(a)(1)(F)*   Form of Notice of Change in Election from Reject to Accept.

 99.(a)(1)(G)*   Chordiant Software, Inc. Annual Report on Form 10-K for its
                 fiscal year ended December 31, 2000, filed with the Securities
                 and Exchange Commission on March 27, 2001 and incorporated
                 herein by reference.

 99.(a)(1)(H)    Chordiant Software, Inc. Definitive Proxy Statement on Schedule
                 14A filed with the Securities and Exchange Commission on April
                 20, 2001 and incorporated by herein by reference.

 99.(a)(1)(I)    Supplement, dated May 29, 2001, to Offer to Exchange, dated May
                 4, 2001.

 99.(a)(1)(J)    Form of E-mail Transmittal Letter distributing the Supplement.

 99.(a)(1)(K)    Form of Confirmation Letter to Employees.

 99.(a)(1)(L)    Form of Revised Election Form.

 99.(a)(1)(M)    Chordiant Software, Inc. Quarterly Report on Form 10-Q for the
                 period ended March 31, 2001, filed with the Securities and
                 Exchange Commission on May 15, 2001 and incorporated herein by
                 reference.

 99.(b)          Not applicable.

 99.(d)(1)*      Chordiant Software, Inc.'s 1999 Equity Incentive Plan and Form
                 of Stock Option Agreement (filed as Exhibit 10.2 to the
                 Company's Registration Statement on Form S-1 (No.333-92187)
                 filed on December 6, 1999 and which Exhibit 10.2 is
                 incorporated herein by reference).

 99.(d)(2)*      Chordiant Software, Inc.'s 1999 Employee Stock Purchase Plan
                 (filed as Exhibit 10.3 with the Company's Registration
                 Statement on Form S-1 (No. 333-92187) filed on December 6, 1999
                 and which Exhibit 10.3 is incorporated herein by reference).

 99.(d)(3)*      Chordiant Software, Inc.'s 1999 Non-Employee Directors' Plan
                 and Form of Stock Option Agreement (filed as Exhibit 10.4 with
                 Amendment No. 1 to the Company's Registration Statement on Form
                 S-1 (No. 333-92187) filed on January 19, 2000 and which Exhibit
                 10.4 is incorporated herein by reference).


--------------------
CUSIP NO. 170404107
--------------------

                                  Schedule TO

 99.(d)(4)*      Chordiant Software, Inc.'s 2000 Nonstatutory Equity Incentive
                 Plan (filed as Exhibit 99.2 with the Company's S-8 Registration
                 Statement (No. 333-42844) filed on August 2, 2000 and which
                 Exhibit 99.2 is incorporated herein by reference).

 99.(d)(5)*      White Spider Software, Inc.'s 2000 Stock Incentive Plan (filed
                 as Exhibit 99.1 with Chordiant Software, Inc.'s Current Report
                 on Form S-8 (No. 333-49032) filed on October 31, 2000 and which
                 Exhibit 99.1 is incorporated herein by reference).

 99.(d)(6)*      Prime Response, Inc.'s 1998 Stock Option/Stock Issuance Plan,
                 as amended.

 99.(g)          Not applicable.

 99.(h)          Not applicable.

* Previously filed as and exhibit to the Schedule TO filed with the Securities
and Exchange Commission on May 4, 2001.


--------------------
CUSIP NO. 170404107
--------------------

                                  Schedule TO

                                   SIGNATURE

     After due inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.

Dated: May 29, 2001

                           CHORDIANT SOFTWARE, INC.

                           By: /s/ Steve G. Vogel
                           -------------------------

                           Name:  Steve G. Vogel
                           Title: Senior Vice President of Finance, Chief
                                  Financial Officer and Chief Accounting Officer


--------------------
CUSIP NO. 170404107
--------------------

                                  Schedule TO

                               INDEX OF EXHIBITS

    Exhibit
    Number                         Description
--------------     -------------------------------------------------------------
 99.(a)(1)(A)*     Offer to Exchange, dated May 4, 2001.

 99.(a)(1)(B)*     Summary of Terms.

 99.(a)(1)(C)*     E-mail Transmittal Letter.

 99.(a)(1)(D)*     Form of Election Form.

 99.(a)(1)(E)*     Form of Notice of Change in Election from Accept to Reject.

 99.(a)(1)(F)*     Form of Notice of Change in Election from Reject to Accept.

 99.(a)(1)(G)*     Chordiant Software, Inc. Annual Report on Form 10-K for its
                   fiscal year ended December 31, 2000, filed with the
                   Securities and Exchange Commission on March 27, 2001 and
                   incorporated herein by reference.

 99.(a)(1)(H)      Chordiant Software, Inc. Definitive Proxy Statement on
                   Schedule 14A filed with the Securities and Exchange
                   Commission on April 20, 2001 and incorporated by herein by
                   reference.

 99.(a)(1)(I)      Supplement, dated May 29, 2001, to Offer to Exchange, dated
                   May 4, 2001.

 99.(a)(1)(J)      Form of E-mail Transmittal Letter distributing the
                   Supplement.

 99.(a)(1)(K)      Form of Confirmation Letter to Employees.

 99.(a)(1)(L)      Form of Revised Election Form.

 99.(a)(1)(M)      Chordiant Software, Inc. Quarterly Report on Form 10-Q for
                   the period ended March 31, 2001, filed with the Securities
                   and Exchange Commission on May 15, 2001 and incorporated
                   herein by reference.

 99.(b)            Not applicable.

 99.(d)(1)*        Chordiant Software, Inc.'s 1999 Equity Incentive Plan and
                   Form of Stock Option Agreement (filed as Exhibit 10.2 to the
                   Company's Registration Statement on Form S-1 (No.333-92187)
                   filed on December 6, 1999 and which Exhibit 10.2 is
                   incorporated herein by reference).

 99.(d)(2)*        Chordiant Software, Inc.'s 1999 Employee Stock Purchase Plan
                   (filed as Exhibit 10.3 with the Company's Registration
                   Statement on Form S-1 (No. 333-92187) filed on December 6,
                   1999 and which Exhibit 10.3 is incorporated herein by
                   reference).

 99.(d)(3)*        Chordiant Software, Inc.'s 1999 Non-Employee Directors' Plan
                   and Form of Stock Option Agreement (filed as Exhibit 10.4
                   with Amendment No. 1 to the Company's Registration Statement
                   on Form S-1 (No. 333-92187) filed on January 19, 2000 and
                   which Exhibit 10.4 is incorporated herein by reference).

 99.(d)(4)*        Chordiant Software, Inc.'s 2000 Nonstatutory Equity Incentive
                   Plan (filed as Exhibit 99.2 with the Company's S-8
                   Registration Statement (No. 333-42844) filed on August 2,
                   2000 and which Exhibit 99.2 is incorporated herein by
                   reference).


--------------------
CUSIP NO. 170404107
--------------------

                                  Schedule TO


 99.(d)(5)*        White Spider Software, Inc.'s 2000 Stock Incentive Plan
                   (filed as Exhibit 99.1 with Chordiant Software, Inc.'s
                   Current Report on Form S-8 (No. 333-49032) filed on October
                   31, 2000 and which Exhibit 99.1 is incorporated herein by
                   reference).

 99.(d)(6)*        Prime Response, Inc.'s 1998 Stock Option/Stock Issuance Plan,
                   as amended.

 99.(g)            Not applicable.

 99.(h)            Not applicable.

* Previously filed as and exhibit to the Schedule TO filed with the Securities
and Exchange Commission on May 4, 2001.