Packeteer(R)'s Mobiliti(TM) Solution Eclipses 1,500 Customer Milestone

Packeteer® (NASDAQ:PKTR), the global leader in WAN application delivery, today announced that it now has over 1,500 separate enterprise customers for Mobiliti, who install the client software on laptop and desktop PCs to support mobile workers, telecommuters and remote users in small office/home office (SOHO) environments. The company credits Mobiliti’s success to its industry-leading performance and unmatched combination of features for mobile user data access, synchronization and automatic back up. (Editor’s Note: Please see the recent press release "Packeteer Mobiliti Software Provides WAN Application Optimization and Data Security to Emulex's Mobile Workforce” available at www.packeteer.com/company/news/releases.cfm.) Recently, leading market research firm Gartner observed that the WAN optimization controllers (WOC) market is undergoing a transition from early adopters and pilot deployments to large-scale mainstream deployments in 2007. "As companies deploy the WOC appliance as a primary means of delivering adequate application performance, they will face the dilemma of how to deliver these functions to small office, home office and mobile professionals cost-effectively,” says Joe Skorupa, research vice president in Gartner’s Networking & Communications Equipment area. Gartner expects such client software will become an increasingly important buying criterion1. The Mobiliti solution is part of Packeteer’s WAN application delivery portfolio and offers WAN-optimized file access capabilities that are fully compatible with Packeteer’s product line. Recent enhancements to Mobiliti include automatic synchronization and backup for Microsoft® Outlook® mailbox files, international language support, and a new administrative console that simplifies and centralizes large-scale deployments. Within the coming months Packeteer will also be releasing a new version of Mobiliti with enhanced acceleration for CIFS and TCP traffic. "The top two market drivers we see for Mobiliti today are productivity and compliance,” observes Alan Menezes, vice president of marketing at Packeteer. "On the productivity front, Mobiliti gives remote users better and faster access to corporate data while, when it comes to regulatory compliance, Mobiliti helps facilitate server consolidation and performs automatic backups of data stored on user systems. Likewise, the planned enhancements to Mobiliti will further increase WAN application performance for mobile users and edge data security for the corporate enterprise.” About Mobiliti Mobiliti offers enterprises a cost-effective and comprehensive desktop/laptop WAN optimization solution that is lightweight, scalable, and simple to deploy and support, making it ideal for improving file access and automating backups for remote and mobile workers. Mobiliti’s Virtual Network Access feature replicates the network structure of the enterprise network on user PCs, creating a seamless view with fast local access to files even when users are disconnected. Mobiliti’s Adaptive File Differencing technology is used to accelerate file synchronization and backup by transmitting incremental changes only. About Packeteer Packeteer is the global leader in WAN Application Delivery. Packeteer’s solutions provide an intelligent, unified and adaptive approach to monitor, shape, and optimize applications, delivering the best user experience for any application to any location. For more information, contact Packeteer at +1 408 873-4400 or visit the company’s Website at http://www.packeteer.com. Safe Harbor Clause The statements contained in this press release that are not purely historical are forward-looking statements within the meaning of Section 21E of the Securities and Exchange Act of 1934, as amended, including statements regarding Packeteer's expectations, beliefs, intentions or strategies regarding the future. Forward-looking statements include, but are not limited to, express or implied statements regarding future revenues, revenue growth and profitability, spending levels by existing and prospective customers, the markets for our products, new product development, liquidity and macro economic conditions. All forward-looking statements included in this press release are based upon information available to Packeteer as of the date hereof. Packeteer assumes no obligation to update any such forward-looking statements. Forward-looking statements involve risks and uncertainties, which could cause actual results to differ materially from those projected. Actual results may differ materially due to a number of factors including the perceived need for our products, our ability to convince potential customers of our value proposition, the costs of competitive solutions, continued capital spending by prospective customers and macro economic conditions. These and other risks relating to Packeteer's business are set forth in Packeteer's Form 10-K filed with the Securities and Exchange Commission on March 16, 2007, and Packeteer's Form 10-Qs and other reports filed from time to time with the Securities and Exchange Commission. Packeteer, PacketShaper, PacketShaper Express, iShared, iShaper and SkyX are trademarks or registered trademarks of Packeteer, Inc. All other products and services are the trademarks of their respective owners. 1 Market Trends: Factors Driving the WOC Market, Joe Skorupa, April 23, 2007