73 Percent of Largest Architecture/ Engineering Firms Rely on Deltek ERP Solutions.

HERNDON, Va. -- Deltek, the ERP vendor of choice for project-based businesses, today announced its continuing dominance in the architecture/ engineering (A/E) industry, as shown in statistics released in this year's Engineering News-Record (ENR). According to ENR's "2005 Top 500 Design Firms" list, 73 percent of the 500 largest revenue-generating A/E firms in the United States rely on Deltek ERP software solutions -- an increase of two percentage points over the previous year's figures.

Widely recognized as a benchmark in the A/E industry, ENR's "Top 500 Design Firms" list was published on April 18 of this year and is ranked according to 2004 revenues. Deltek clients represent a solid 66 percent of the top 100 A/E firms on this year's list, including clients such as HOK, EDAW, MACTEC and RTKL.

"Deltek's comprehensive understanding of our industry and our specific markets is apparent in the range of features and functions in the Deltek Vision platform," said Jay Brader, Vice President and Controller for internationally known planning, architecture, engineering and interior design firm LEO A DALY. "Deploying Deltek Vision has significantly improved our business efficiency and project profitability across all levels of our company, helping us consistently remain among the top A/E and interior design firms in the United States."

Ranked on this year's Top 500 list and 8th among ENR's Top 50 in General Building, LEO A DALY relies on Deltek Vision, an ERP solution specifically designed for professional service firms, to streamline its core business processes including financial and project accounting, resource planning, human resources and client relationship management. With more than 1,000 employees located in 16 offices worldwide, LEO A DALY maintains a global client base that includes nations, local governments, corporations, colleges and universities, industry and nonprofit institutions.

Other Deltek solutions being utilized by firms on this year's list include Deltek Time Collection and Deltek Enterprise, a robust solution for project-based businesses that includes business performance management, human resources, and procurement and materials management tools.

"Year after year, Deltek has continued to help project-based businesses, including A/E firms, achieve maximum business productivity by maintaining a close relationship with our customers and developing technology based on their specific needs," said Kevin Parker, CEO of Deltek. "Our project-based solutions offer the most robust, flexible ERP technology and ensure that Deltek clients stay at the forefront of their respective industries."

ABOUT DELTEK

With more than 8,000 customers, Herndon, VA-based Deltek is the leading provider of enterprise resource planning (ERP) solutions for project-based businesses and professional services firms. Founded in 1983, Deltek enables companies to maximize profitability and productivity, integrating all aspects of their businesses. Deltek focuses on the architecture and engineering, IT services, management consulting, construction, systems integration and government contracting markets. Its clients include Bechtel, CACI, HOK and Verizon. Analyst firm Technology Evaluation Centers declares Deltek "... the ERP leader for professional services industries and other companies focused on project-related work."

Deltek Enterprise(TM), Deltek Vision(R) and Deltek GCS Premier(R) power a myriad of front- and back-office applications including accounting, billing, resource planning, budgeting and control, business intelligence, client relationship management and proposal automation, employee time and expense, HR management, procurement and materials management and project management.

Deltek Enterprise(TM), Deltek Vision(R), Deltek GCS Premier(R), Deltek Costpoint(R) and Deltek GovWin(TM) are registered trademarks of Deltek Systems, Inc. All other product names used are trademarks or registered trademarks of their respective owners.

This press release is available on the Deltek Web site at www.deltek.com.