Plumtree Software (PLUM) 10-Q 2003 Q2 Quarterly report

EXHIBIT 99.3

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

As of the date hereof, I, John Kunze, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the Quarterly Report of Plumtree Software, Inc. on Form 10-Q for the fiscal quarter ended June 30, 2003 fully complies with the requirements of Section 13(a) or 15(d) of the Securities exchange Act of 1934 and that information contained in such Quarterly Report on Form 10-Q fairly presents in all material respects the financial condition and results of operations of Plumtree Software, Inc.

By:	/s/    JOHN KUNZE
Name:	John Kunze
Title:	Chief Executive Officer
Dated:	July 24, 2003