Attached files

file filename
EX-31.1 - CERTIFICATION PURSUANT TO EXCHANGE ACT RULES 13A-14 AND 15D-14 OF THE CEO - PEGASYSTEMS INCdex311.htm
EX-21.1 - SUBSIDIARIES OF THE REGISTRANT - PEGASYSTEMS INCdex211.htm
EX-31.2 - CERTIFICATION PURSUANT TO EXCHANGE ACT RULES 13A-14 AND 15D-14 OF THE CFO - PEGASYSTEMS INCdex312.htm
10-K - FORM 10-K - PEGASYSTEMS INCd10k.htm
EX-32 - CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350 OF THE CEO AND CFO - PEGASYSTEMS INCdex32.htm

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement Nos. 333-09305, 333-53746, 333-89707, 333-104788, 333-116660, 333-135596, 333-166287, and 333-166544 on Form S-8 of our reports dated March 16, 2011 relating to the financial statements of Pegasystems Inc. and the effectiveness of Pegasystems Inc.’s internal control over financial reporting, appearing in this Annual Report on Form 10-K of Pegasystems Inc. for the year ended December 31, 2010.

/s/ DELOITTE & TOUCHE LLP

Boston, Massachusetts

March 16, 2011