14 of the top 15 firms are Deltek customers

HERNDON, VA – June 30, 2008 – Deltek, Inc. (NASDAQ: PROJ), the leading provider of enterprise applications software for project-focused organizations, today announced that 78% of the top 500 U.S. engineering, architectural and environmental design firms utilize Deltek products. This marks an increase over the previous year’s ranking with 14 of the top 15 on the list all being Deltek customers. The top 500 listing is a renowned, independent ranking conducted annually by Engineering News Record (ENR).

“The continued increase of Deltek clients appearing on the ENR Top 500 list demonstrates that even more industry-leading companies have recognized the value that Deltek solutions deliver for improving business performance,” said Kevin Parker, president and CEO of Deltek. “Deltek’s solutions offer these leading architectural, engineering and environmental design firms strong business performance management and accounting tools that anticipate, track, and manage their projects from inception to completion.”

Published annually, the ENR Top 500 recognizes top-performing architectural and engineering firms according to revenues for services performed in the previous calendar year. More information on the latest ENR Top 500 may be found by visiting their web site at www.enr.com.


ABOUT DELTEK
Deltek, Inc. (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.