June 24, 2008

Riverbed and OPNET Partner to Deliver Enhanced Visibility into Application Performance Over WANs

BETHESDA, Md. and SAN FRANCISCO, June 24, 2008 (PRIME NEWSWIRE) -- OPNET Technologies, Inc. (Nasdaq:OPNT), a leading provider of solutions for managing networks and applications, and Riverbed Technology (Nasdaq:RVBD), the technology and market leader in wide-area data services (WDS), today announced their intention to deliver unparalleled capabilities for real-time monitoring and troubleshooting of wide area network (WAN) applications accelerated by Riverbed(r).

The combination of Riverbed Steelhead(r) appliances and OPNET's ACE solutions for application performance management will provide customers with a complete offering for enhanced visibility into applications accelerated by Riverbed. It will allow customers to more effectively optimize network performance by identifying problem areas for applications, measuring end-to-end application delivery, and enhancing troubleshooting and problem resolution.

The combination of OPNET's intelligent analytics and reporting with Riverbed WDS will allow customers to maximize bandwidth allocation, plan server/storage deployments and ensure SLAs are met. Through their partnership, Riverbed and OPNET will collaborate to enhance the scope of capabilities that can be leveraged by users to more effectively optimize and manage their WAN environments.

The two companies are also engaging in joint sales and marketing efforts. OPNET has joined the Riverbed Technology Alliance (RTA) program, a group of complementary technology companies who share a common vision of accelerating data and application performance and delivering significant savings as customers increasingly use WANs to enable global business.

Coty Inc., a leading provider of fragrance and beauty products, implemented Riverbed Steelhead appliances and OPNET's ACE Live and ACE Analyst to assist in an IT consolidation effort. "We chose solutions from Riverbed and OPNET in order to scale and manage our network more efficiently," says Steve Kamvissis, global network manager at Coty. "They enabled us to centralize services without the need for additional bandwidth, while gaining the ability to easily monitor and troubleshoot our global users' access to key applications. The implementation of the Riverbed and OPNET solutions has been effortless and now my team has more time to focus on planning strategic IT projects that impact our business."

Riverbed Steelhead appliances help organizations overcome the problems of poor application performance and insufficient bandwidth by accelerating all TCP-based applications over the WAN. By speeding up the performance of applications up to 100 times, award-winning Steelhead WDS products from Riverbed enable companies to consolidate IT, improve backup and replication processes to ensure data integrity, and improve staff productivity and collaboration.

OPNET's ACE solutions provide the industry's first integrated real-time end-user experience monitoring and deep-level troubleshooting for networked applications. ACE Live delivers an end-to-end solution that spans monitoring, measurement, and detection of application performance violations, providing visibility of all transactions and users across the enterprise. OPNET's ACE Analyst complements ACE Live with expert knowledge about network protocols and application behavior as seen from a network perspective. The combination of ACE Live and ACE Analyst enables IT organizations to detect performance issues, perform triage across all transactions, and pinpoint and remedy specific issues before they severely affect business operations.

"Our respective customers have chosen solutions from OPNET and Riverbed because they want to invest in best-in-class technologies for network and application performance," stated Marc Cohen, OPNET's Chairman and CEO. "Our collaboration promises to deliver even greater benefits for our customers."

"This partnership will help Riverbed better meet the needs of its customers by providing enhanced visibility and management of applications over the WAN. By obtaining true visibility, our customers are better able to make strategic decisions about IT projects, such as consolidation efforts," said Alan Saldich, vice president of product marketing and alliances at Riverbed. "We're looking forward to our ongoing work with OPNET to provide our customers with solutions that meet their ever-changing needs."

About OPNET Technologies, Inc.

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

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.

Steelhead Products

Riverbed WDS solutions enable organizations of all sizes to overcome a host of severe problems, including poor application performance and insufficient bandwidth at remote sites. By speeding the performance of applications between data centers, remote offices and mobile workers by five to 50 times and in some cases up to 100 times, Riverbed's award-winning Steelhead WDS products enable companies to consolidate IT, improve backup and replication processes to ensure data integrity, and improve staff productivity and collaboration. Steelhead products have been deployed in organizations ranging from the world's largest corporations with offices around the globe to small companies with a couple of sites that are just miles apart. To learn more, view Riverbed's demo: www.riverbed.com/pr/jack.

Forward Looking Statements

This press release contains forward-looking statements, including statements relating to the expected demand for Riverbed's products and services, and statements relating to Riverbed's ability to meet the needs of distributed organizations. These forward-looking statements involve risks and uncertainties, as well as assumptions that, if they do not fully materialize or prove incorrect, could cause our results to differ materially from those expressed or implied by such forward-looking statements. The risks and uncertainties that could cause our results to differ materially from those expressed or implied by such forward-looking statements include our ability to react to trends and challenges in our business and the markets in which we operate; our ability to anticipate market needs or develop new or enhanced products to meet those needs; the adoption rate of our products; our ability to establish and maintain successful relationships with our distribution partners; our ability to compete in our industry; fluctuations in demand, sales cycles and prices for our products and services; shortages or price fluctuations in our supply chain; our ability to protect our intellectual property rights; general political, economic and market conditions and events; and other risks and uncertainties described more fully in our documents filed with or furnished to the Securities and Exchange Commission. More information about these and other risks that may impact Riverbed's business are set forth in our Form 10-Q filed with the SEC on April 29, 2008. All forward-looking statements in this press release are based on information available to us as of the date hereof, and we assume no obligation to update these forward-looking statements. Any future product, feature or related specification that may be referenced in this release are for information purposes only and are not commitments to deliver any technology or enhancement. Riverbed reserves the right to modify future product plans at any time.

About Riverbed

Riverbed Technology is the technology and market leader in wide-area data services (WDS) solutions for companies worldwide. By enabling application performance over the wide area network (WAN) that is orders of magnitude faster than what users experience today, Riverbed is changing the way people work, and enabling a distributed workforce that can collaborate as if they were local. Additional information about Riverbed (Nasdaq: RVBD) is available at www.riverbed.com.

Riverbed Technology, Riverbed, Steelhead, RiOS, Interceptor, and the Riverbed logo are trademarks or registered trademarks of Riverbed Technology, Inc. All other trademarks used or mentioned herein belong to their respective owners

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 CONTACT: Riverbed Technology          Kristalle Ward          415-247-8140          [email protected]                    OPNET Technologies, Inc.          Margarita Castillo          (240) 497-3000          [email protected]                    OPNET Investor Relations:          Mel Wesley          (240) 497-3000          [email protected]