<PAGE>



                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                   FORM 10-K/A
                                 AMENDMENT NO. 1

                  FOR ANNUAL AND TRANSITION REPORTS PURSUANT TO
           SECTIONS 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

                                   (Mark One)
              [X] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF
                       THE SECURITIES EXCHANGE ACT OF 1934

                   For the fiscal year ended December 31, 2003

       TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
                              EXCHANGE ACT OF 1934

              For the transition period from _________ to _________

                         Commission file number 0-24277

                               CLARUS CORPORATION

             (Exact name of Registrant as specified in its Charter)



                    Delaware                         58-1972600
           (State of Incorporation)      (R.S. Employer Identification No.)


                               One Pickwick Plaza
                          Greenwich, Connecticut 06830
                (Address of principal office, including zip code)

                                 (203) 302-2000
              (Registrant's telephone number, including area code)

        SECURITIES REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT: None

    SECURITIES REGISTERED PURSUANT TO SECTION 12(g) OF THE ACT: Common Stock,
                                par value $.0001

Indicate by check mark whether the registrant: (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
Registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days. YES [X]    NO [ ]

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405
of Regulation S-K is not contained herein, and will not be contained, to the
best of Registrant's knowledge, in definitive proxy or information statement
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K.  [X]

Indicate by check mark whether the Registrant is an accelerated filer (as
defined in Rule 12b-2 of the Act).   [X]

The aggregate market value of the voting stock and non-voting common equity held
by non-affiliates of the Registrant at June 30, 2003 was approximately $86.6
million based on $6.28 per share, the closing price of the common stock as
quoted on the Nasdaq National Market.


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The number of shares of the Registrant's common stock outstanding at March 1,
2004 was 16,582,426 shares.

                       DOCUMENT INCORPORATED BY REFERENCE

Portions of our Proxy Statement for the 2004 Annual Meeting of Stockholders to
be filed with the Securities and Exchange Commission within 120 days of the
Registrant's 2003 fiscal year end are incorporated by reference into Part III of
this report.

                                EXPLANATORY NOTE

The undersigned registrant hereby amends Item 15(d) of its Annual Report on Form
10-K for the year ended December 31, 2003 to include as Exhibit 99.1, the Annual
Report on Form 11-K for the Clarus Corporation Employee Stock Purchase Plan and
the Clarus Corporation Global Employee Stock Purchase Plan for the year ended
December 31, 2003 (as permitted by Rule 15d-21).



                                     PART IV

ITEM 15.   EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K
Financial Statements, Financial Statement Schedules and Exhibits

     (d) Exhibits

     Exhibit
     Number         Exhibit
     ------         -------
     3.1            Amended and Restated Certificate of Incorporation of the
                    Company (Incorporated by reference from Exhibit 3.3 to the
                    Company's Form S-1 Registration Statement (File No. 333-
                    46685)).

     3.2            Amendment to Amended and Restated Certificate of
                    Incorporation (incorporated by reference from Exhibit 9.1 to
                    the Company's 10-Q filed on August 14, 2000).

     3.3            Amendment to Amended and Restated Certificate of
                    Incorporation of the Company (incorporated by reference from
                    Exhibit 3.1 to the Company's Current Report on Form 8-K,
                    filed on July 31, 2003).

     3.4            Amended and Restated Bylaws of the Company (incorporated by
                    reference from Exhibit 3.2 to the Company's Registration
                    Statement on Form S-4 (File No. 333-63535)).

     3.5            Amendment No. 1 to the Amended and Restated Bylaws of the
                    Company. (filed as Exhibit 3.4 to Company's Annual Report on
                    Form 10-K, filed with the Securities and Exchange Commission
                    on March 31, 2003 and incorporated herein by reference).

     4.1            See Exhibits 3.1, 3.2, 3.3, 3.4 and 3.5 for provisions of
                    the Amended and Restated Certificate of Incorporation and
                    Amended and Restated Bylaws of the Company defining rights
                    of the holders of Common Stock of the Company.

     4.2            Specimen Stock Certificate (incorporated by reference from
                    Exhibit 9.1 to Company's Registration Statement on Form S-1
                    (File No. 333-46685)).


     4.3            Restricted Stock Agreement dated as of April 11, 2003
                    between the Company and Warren B. Kanders (incorporated by
                    reference from Exhibit 4.1 to the Company's Form 10-Q filed
                    on May 15, 2003). *

    10.1            Lease Agreement between the Company and Technology
                    Park/Atlanta, Inc. dated July 24, 1998 (incorporated by
                    reference from Exhibit 10.18 to the Company's Form S-4
                    Registration Statement (File No. 333-63535)).

    10.2            Assignment and Assumption of Leases between Technology
                    Park/Atlanta, Inc. and Metropolitan Life Insurance Company
                    dated July 24, 1998 (incorporated by reference from



                                                     -2-
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                    Exhibit 10.18 to the Company's Form S-4 Registration
                    Statement (File No. 333-63535)).

    10.3            Asset Purchase Agreement, dated as of October 17, 2002,
                    between Epicor Software Corporation and the Company
                    (incorporated by reference from Exhibit 2.1 to the Company's
                    Form 8-K filed on October 18, 2002).

    10.4            Bill of Sale and Assumption Agreement, dated as of December
                    6, 2002, between Epicor Software Corporation and the Company
                    (incorporated by reference from Exhibit 2.2 to the Company's
                    (Form 8-K filed on October 18, 2002).

    10.5            Trademark Assignment dated as of December 6, 2002, by the
                    Company in favor of Epicor Software Corporation,
                    (incorporated by reference from Exhibit 2.3 to the Company's
                    Form 8-K filed on October 18, 2002).

    10.6            Patent Assignment, dated as of December 6, 2002, between
                    Epicor Software Corporation and the Company (incorporated by
                    reference from Exhibit 2.4 to the Company's Form 8-K filed
                    on October 18, 2002).

    10.7            Noncompetition Agreement, dated as of December 6, 2002,
                    between Epicor Software Corporation and the Company
                    (incorporated by reference from Exhibit 2.5 to the Company's
                    Form 8-K filed on October 18, 2002).

    10.8            Transition Services Agreement, dated as of December 6, 2002,
                    between Epicor Software Corporation and the Company
                    (incorporated by reference from Exhibit 2.7 to the Company's
                    Form 8-K filed on October 18, 2002).

    10.9            Escrow Agreement, dated as of December 6, 2002, between
                    Epicor Software Corporation, the Company and Branch Bank &
                    Trust Company, Inc. (incorporated by reference from Exhibit
                    2.8 to the Company's Form 8-K filed on October 18, 2002).

    10.10           Form of Indemnification Agreement for Directors and
                    Executive Officers of the Company, (incorporated by
                    reference as Exhibit 10.1 of the Company's Form 8-K filed on
                    December 23, 2002).

    10.11           Employment Agreement, dated as of December 6, 2002, between
                    the Company and Warren B. Kanders (incorporated by reference
                    from Exhibit 10.2 to the Company's Form 8-K filed on
                    December 23, 2002).*

    10.12           Employment Agreement, dated as of December 6, 2002, between
                    the Company and Nigel P. Ekern. (incorporated by reference
                    from Exhibit 10.3 to the Company's Form 8-K filed on
                    December 23, 2002).*

    10.13           Consulting Agreement, dated as of December 6, 2002, between
                    the Company and Stephen P. Jeffery (incorporated by
                    reference from Exhibit 10.4 to the Company's Form 8-K filed
                    on December 23, 2002).*

    10.14           Amended and Restated Stock Incentive Plan (incorporated by
                    reference from Exhibit 10.2 to the Company's Form 10-Q filed
                    on August 14, 2000). *

    10.15           Employee Stock Purchase Plan (incorporated by reference from
                    Exhibit 10.3 to the Company's Form 10-Q filed on August 14,
                    2000). *

    10.16           Global Employee Stock Purchase Plan (incorporated by
                    reference from Exhibit 10.4 to the Company's Form 10-Q filed
                    on August 14, 2000). *

    10.17           Form of Nonqualified Stock Option Agreement (incorporated by
                    reference from Exhibit 10.5 to the Company's Form 10-Q filed
                    on August 14, 2000). *

    10.18           Stock Incentive Plan of Software Architects International,
                    Limited (incorporated by reference from Exhibit 2.2 to the
                    Company's Form 8-K filed on June 13, 2000). *

    10.19           2000 Declaration of Amendment to Software Architects
                    International Limited Stock Incentive



                                      -3-
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                    Plan (incorporated by reference from Exhibit 2.3 to the
                    Company's Form 8-K filed on June 13, 2000). *

    10.20           1992 Stock Option Plan, effective November 22, 1992
                    (incorporated by reference from Exhibit 10.2 to Company's
                    Registration on Form S-1 (File No. 333-46685)). *

    10.21           Amendment to 1992 Stock Option Plan. (incorporated by
                    reference from Exhibit 10.2 to the Company's Form 10-K filed
                    on March 30, 2000). *

    10.22           Lease dated as of September 23, 2003 between Reckson
                    Operating Partnership, L.P., the Company, and Kanders &
                    Company, Inc. (incorporated by reference from Exhibit 10.1
                    to the Company's 10-Q filed on November 12, 2003).

    10.23           Transportation Services Agreement dated as of December 18,
                    2003 between Kanders Aviation, LLC and the Company
                    (incorporated by reference from Exhibit 10.23 to the
                    Company's 10-K filed on March 11, 2004).

    21.1            List of Subsidiaries (incorporated by reference from Exhibit
                    21.1 to the Company's 10-K filed on March 11, 2004).

    23.1            Consent of KPMG LLP (incorporated by reference from Exhibit
                    23.1 to the Company's 10-K filed on March 11, 2004)

    23.2            Consent of KPMG LLP - Clarus Corporation Employee Stock
                    Purchase Plan

    23.3            Consent of KPMG LLP - Global Employee Stock Purchase Plan of
                    Clarus Corporation

    31.1            Certification of Principal Executive Officer, as required by
                    Rule 13a-14(a) of the Securities Exchange Act of 1934.

    31.2            Certification of Principal Financial Officer, as required by
                    Rule 13a-14(a) of the Securities Exchange Act of 1934.

    32.1            Certification of Principal Executive Officer, as required by
                    Rule 13a-14(b) of the Securities Exchange Act of 1934.

    32.2            Certification of Principal Financial Officer, as required by
                    Rule 13a-14(b) of the Securities Exchange Act of 1934

    99.1            Annual Report on Form 11-K for the Clarus Corporation
                    Employee Stock Purchase Plan and the Clarus Corporation
                    Global Employee Stock Purchase Plan for the year ended
                    December 31, 2003


    * Management contract or compensatory plan or arrangement.



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                                   SIGNATURES

     Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the Company has duly caused this amended report to be
signed on its behalf by the undersigned, thereunto duly authorized.

                               CLARUS CORPORATION


Date:  April 29, 2004
                                       By:  /s/ Nigel P. Ekern
                                           -------------------------------------
                                            Nigel P. Ekern
                                            Chief Administrative Officer




<TABLE>
<CAPTION>
                 Signature                                      Title                                         Date
                 ---------                                      -----                                         ----
<S>                                             <C>                                             <C>
 /s/ Nigel P. Ekern                             Chief Administrative Officer                      April 29, 2004
---------------------------------------------   (principal executive officer)                   ------------------------------------
 Nigel P. Ekern


 /s/ Susan Luckfield                            Controller                                        April 29, 2004
---------------------------------------------   (principal financial officer)                   ------------------------------------
 Susan Luckfield


 /s/ Warren B. Kanders                          Executive Chairman of the Board of Directors      April  29, 2004
---------------------------------------------                                                   ------------------------------------
 Warren B. Kanders


 /s/ Stephen P. Jeffery                         Director                                          April  29, 2004
---------------------------------------------                                                   ------------------------------------
 Stephen P. Jeffery


 /s/ Donald L. House                            Director                                          April 29, 2004
---------------------------------------------                                                   ------------------------------------
 Donald L. House


 /s/ Tench Coxe                                 Director                                          April  29, 2004
---------------------------------------------                                                   ------------------------------------
 Tench Coxe


 /s/ Burtt R. Ehrlich                           Director                                          April  29, 2004
---------------------------------------------                                                   ------------------------------------
 Burtt R. Ehrlich


 /s/ Nicholas Sokolow                           Director                                           April  29, 2004
---------------------------------------------                                                   ------------------------------------
 Nicholas Sokolow

</TABLE>




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                                  EXHIBIT INDEX




        Number                  Exhibit
        ------                  -------
          23.2                  Consent of KPMG LLP - Clarus Corporation
                                Employee Stock Purchase Plan.

          23.3                  Consent of KPMG LLP - Global Employee Stock
                                Purchase Plan of Clarus Corporation.

          31.1                  Certification of Principal Executive Officer, as
                                required by Rule 13a-14(a) of the Securities
                                Exchange Act of 1934.

          31.2                  Certification of Principal Financial Officer, as
                                required by Rule 13a-14(a) of the Securities
                                Exchange Act of 1934.

          32.1                  Certification of Principal Executive Officer, as
                                required by Rule 13a-14(b) of the Securities
                                Exchange Act of 1934.

          32.2                  Certification of Principal Financial Officer, as
                                required by Rule 13a-14(b) of the Securities
                                Exchange Act of 1934.

          99.1                  Annual Report on Form 11-K for the Clarus
                                Corporation Employee Stock Purchase Plan and the
                                Clarus Corporation Global Employee Stock
                                Purchase Plan for the year ended December 31,
                                2003.



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