For Immediate Release

Deltek Prices Initial Public Offering

HERNDON, Va.—(BUSINESS WIRE)—Nov. 1, 2007—Deltek, Inc. (NASDAQ:PROJ), today announced the pricing of its initial public offering of 9,000,000 shares of its common stock at $18.00 per share. Of the shares offered, 3,009,475 were offered by Deltek and 5,990,525 were offered by selling shareholders. In addition, the underwriters have been granted a 30-day over-allotment option to purchase up to an additional 1,347,820 shares from the selling shareholders.

Deltek's common shares will begin trading November 1, 2007 on the NASDAQ Global Select Market under the trading symbol "PROJ". The offering is expected to close on November 6, 2007, subject to customary conditions.

Credit Suisse Securities (USA) LLC is the lead book-running manager. J.P. Morgan Securities Inc., Lehman Brothers Inc. and Merrill Lynch, Pierce, Fenner & Smith Incorporated are serving as the lead managers for the offering. Merrill Lynch, Pierce, Fenner & Smith Incorporated acted as the qualified independent underwriter in pricing the offering. The co-managers for the offering are Wachovia Capital Markets, LLC, William Blair & Company, LLC and Montgomery & Co., LLC. Copies of the final prospectus relating to these securities may be obtained by writing to the lead book-running manager at: Credit Suisse Securities (USA) LLC, Prospectus Department, Eleven Madison Avenue, New York, NY 10010, telephone 1.800.221.1037.

A registration statement relating to these securities was declared effective by the Securities and Exchange Commission on October 31, 2007. This press release shall not constitute an offer to sell or a solicitation of an offer to buy, nor shall there be any sale of these securities in any state or jurisdiction where such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.

About Deltek

Deltek® (NASDAQ: PROJ) is the leading provider of enterprise applications software designed specifically for project-focused businesses. For more than two decades, our software applications have enabled organizations to automate mission-critical business processes around the engagement, execution and delivery of projects. More than 12,000 customers worldwide rely on Deltek to measure business results, optimize performance, streamline operations and win new business. Visit www.deltek.com.

Media Relations Contact:
Patrick Smith
703.885.9062, PatrickSmith@deltek.com

Investor Relations Contact:
Joe Wilkinson
703.885.9423, joewilkinson@deltek.com