EXHIBIT 32.1

                    CERTIFICATION OF CHIEF EXECUTIVE OFFICER
                                   PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

I, Moshe BenBassat, certify, pursuant to 18 U.S.C. Section 1350, as adopted
pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Annual
Report of ClickSoftware Technologies Ltd. on Form 10-K for the annual period
ended December 31, 2003 fully complies with the requirements of Section 13(a) or
15(d) of the Securities Exchange Act of 1934 and that the information contained
in such Report on Form 10-K fairly presents in all material respects the
financial condition and results of operations of ClickSoftware Technologies Ltd.
as of and for the periods presented in such Report on Form 10-K. This written
statement is being furnished to the Securities and Exchange Commission as an
exhibit accompanying such Report and shall not be deemed filed pursuant to the
Securities Exchange Act of 1934.


Dated: April 28, 2004                  By: /s/ Moshe Benbassat
                                           -------------------
                                           Moshe BenBassat
                                           Chairman and Chief Executive Officer




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10-K CLICKSOFTWARE TECHNOLOGIES LTD.                                    PAGE 20