OPNET Named to List of World's Most Successful Software Companies; Independent Industry Analyst Report Ranks OPNET as One of Seven Public Software Companies with Eleven or More Consecutive Years of Growth and Profitability

BETHESDA, Md.--()--Sept. 21, 2006--OPNET Technologies, Inc. (NASDAQ:OPNT), a leading provider of management software for networks and applications, today announced that it has been ranked seventh in the Cape Horn Strategies 2006 Sustained Success Honor Roll.

The Honor Roll tracks successful software companies based on long-term financial performance. The report compares the financial performance of all 503 publicly traded software companies on the U.S. stock exchanges in 2005 and shows that OPNET is one of seven software companies to have recorded at least eleven consecutive years of growth and profitability. Other software companies in the ranking included Microsoft, #1 with 25 years of profitable growth, and Business Objects, #4 with 14 years of profitable growth.

According to the report, "Of all the software companies on the U.S. stock exchanges--NYSE, AMEX, NASDAQ--only 20 out of 503 in 2005 managed to achieve a record of five consecutive years or more of profitable growth. As a group, reflecting their overall success, the Honor Roll members significantly outperform the industry averages. While the software industry as a whole had little revenue growth at 4%, this group on average grew at 8%. If you omit Microsoft from this list, the other 19 companies had an unusually high growth rate of 31%. And while the industry's net revenue grew 20%, net revenue for the Honor Roll group grew at a rate more than double that of 43%."

Marc A. Cohen, OPNET's Chairman and CEO, stated, "We are very pleased to be ranked in the Sustained Success Honor Roll once again. We are in great company, and believe that it is a validation of our long term strategy. In the six years we have been a public company, our revenue has grown four-fold, we completed three acquisitions, significantly broadened our product portfolio, and entered into a global distribution agreement with Cisco Systems."

To view the report online, please visit http://www.capehornstrategies.com/honor_roll.htm

About OPNET Technologies, Inc.

Founded in 1986, OPNET Technologies, Inc. (NASDAQ:OPNT) is a leading provider of management software for networks and applications. For more information about OPNET and its products, please visit http://www.opnet.com.

About Cape Horn Strategies

Founded in 1998, Cape Horn Strategies, Inc. is a software industry management services and industry analysis firm. Cape Horn Strategies helps software company CEOs reach their next level of revenue growth. For the past four years, Cape Horn Strategies has investigated why only a handful of public companies, those on the Sustained Success Honor Roll, manage to profitably grow year after year.

OPNET and OPNET Technologies, Inc. are trademarks of OPNET Technologies, Inc. All other trademarks are the property of their respective owners.

Statements in this press release that are not purely historical facts may constitute forward-looking statements as defined in the Private Securities Litigation Reform Act of 1995. OPNET Technologies, Inc. ("OPNET") assumes no obligation to update statements. Forward-looking statements are predictions based upon information available to OPNET as of the date of this press release and involve risks and uncertainties; therefore, actual events or results may differ materially. For a discussion of risk factors, see OPNET's reports, including its most recent 10-Q and 10-K, filed with the Securities & Exchange Commission.

Note to editors: The word OPNET is spelled with all upper-case letters.

Contacts

OPNET Technologies, Inc.
Media Contact:
Margarita Castillo, 240-497-3000
Media@opnet.com
www.opnet.com
or
Investor Relations:
Mel Wesley, 240-497-3000
ir@opnet.com
www.opnet.com

Contacts

OPNET Technologies, Inc.
Media Contact:
Margarita Castillo, 240-497-3000
Media@opnet.com
www.opnet.com
or
Investor Relations:
Mel Wesley, 240-497-3000
ir@opnet.com
www.opnet.com