DSET Named New Jersey "Fast 50" Technology Company for
Third Consecutive Year

Bridgewater, NJ - August 21, 2000 - (Nasdaq: DSET) - DSET Corporation has been designated one of New Jersey's "Fast 50" technology companies for 2000 in the annual list compiled by the accounting and consulting firm of Deloitte & Touche. This is the third consecutive Fast 50 award for DSET.

"Our Fast 50 awards are a tribute to all of the dedicated employees at DSET who have worked very hard to sustain our consistent, profitable growth," said Bruce Crowell, DSET's chief financial officer. "Their efforts have established DSET as the leader in providing OSS interconnection software to the new telephone companies in the U.S. This software enables these new service providers to electronically submit orders to the former regional Bell operating companies, the RBOCs, so they can lease portions of the RBOCs' networks and subsequently turn on phone service for their customers in days rather than weeks or months."

The Fast 50 showcases the fastest-growing technology companies in 21 regions in the United States, as well as in Canada, The Netherlands, and the United Kingdom. To earn a place in the 2000 Fast 50 ranking, a company had to demonstrate exceptional revenue growth over the last five years and substantial investments in research and development. With growth of 464% from 1995 to 1999, DSET ranked twenty-first among New Jersey companies specializing in areas such as telecommunications, computers, and biotechnology.

About DSET:
DSET Corporation is a leading provider of business-to-business e-commerce connectivity solutions for the global telecommunications marketplace. The DSET suite of electronic-bonding gateways is designed to interconnect the operations support systems (OSSs) of service providers that must exchange information and share network capabilities with trading partners to provision and maintain a growing range of services for customers in the competitive telecom market. DSET is headquartered in Bridgewater, New Jersey, and the company's Web site can be viewed at www.dset.com.

Statements regarding financial matters contained in this press release, other than historical facts, are forward-looking. Since all statements about DSET's plans, estimates, and expectations are based on current projections that involve risks and uncertainties, and are subject to change at any time, the company's actual results may differ materially from expected results. Investors should consider these risks and uncertainties, which are discussed in documents filed by DSET with the Securities and Exchange Commission. These documents identify important factors that could cause the actual results to differ materially from those contained in the projections or forward-looking statements. DSET expressly disclaims any obligation to update any forward-looking statements.

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DSET Contacts:

Media Relations: Dean Maskevich, Marketing Communications,
908-526-7500 Ext. 1366, e-mail: dmaskevi@dset.com

Investor Relations: John P. Murphy, Westfield Investor Relations,
908-233-1558, e-mail: westfieldir@worldnet.att.netwestfieldir@worldnet.att.net

DSET and the DSET logo are registered trademarks of DSET Corporation. All other trademarks are the property of their respective owners.