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, 2007 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 10, 2007 | By: | /s/ KENNETH R. KLEIN | ||||
| Kenneth R. Klein | ||||||
Chairman of the Board, President and Chief Executive Officer |
