EXHIBIT 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Wind River Systems, Inc. (the “Company”) on Form 10-Q for the period ending July 31, 2008 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Kenneth R. Klein, certify, pursuant to 18 U.S.C. § 1350, as adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: September 9, 2008	By:	/s/ KENNETH R. KLEIN
		Kenneth R. Klein
		Chairman of the Board, President and Chief Executive Officer