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OPNET 10.0 Products Available to Customers Worldwide

—Major new software release expands OPNET's value proposition to corporate enterprises, government and defense agencies, network service providers, and network R&D organizations—

BETHESDA, MD– August 25, 2003 --OPNET Technologies, Inc. (Nasdaq: OPNT), a leading provider of management software for networks and applications, today announced general availability of the 10.0 release of OPNET IT Guru, SP Guru, Modeler, and ODK (OPNET Development Kit) products.

OPNET President & CTO, Alain Cohen, stated, "OPNET 10.0 products feature dramatically improved scalability, interoperability, and ease of use. We are very proud of this release, and we are excited to unveil it to such a large, diverse audience at OPNETWORK 2003 this week." OPNETWORK 2003 is OPNET's annual technology conference, which attracts over 1,000 people each year from corporate enterprises, government and defense agencies, service providers, and network R&D organizations around the world.

OPNET 10.0 delivers a broad spectrum of innovative new features and"industry firsts":

  • Ground-breaking enhancements for troubleshooting the performance of enterprise applications, including new Citrix decodes, multi-tier transaction correlation, and the ability to rapidly predict the impact of large-scale application deployments.
  • Improved data import, including incremental network updating, and importing of layer 2 devices.
  • Significant acceleration of simulations, especially for large wireless network models. A completely parallel discrete event simulation engine is included.
  • Enhancements for troubleshooting and validating device configurations, including a new environment for authoring proprietary rules and new security auditing.
  • Numerous enhancements to OPNET's Model Library, including mobile ad-hoc networking (MANET), mainframes, HSRP, IP Tunneling, layer 3 switches (RSM/MFSC), policy routing, and more.

Availability
OPNET IT Guru, SP Guru, Modeler, and ODK 10.0 products, product modules, and specialized models are available immediately.

About OPNET Technologies, Inc.
Founded in 1986, OPNET Technologies, Inc. is a leading provider of management software for networks and applications. For more information about OPNET and its products, visit www.opnet.com.

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OPNET, OPNET Technologies, Inc., IT Guru, SP Guru, Modeler, and OPNET Development Kit 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.

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


OPNET Media Contact:
Margarita Castillo
OPNET Technologies, Inc.
(240) 497-3000
Media@opnet.com
www.opnet.com

OPNET Investor Relations:
Mel Wesley
OPNET Technologies
(240) 497-3000
ir@opnet.com
www.opnet.com