Cisco and Citrix Embed Click-to-Call into Applications Delivered on Citrix Presentation Server

New Capability Enables Users to Initiate Voice Communications from any Application

FORT LAUDERDALE, Fla. — 12/11/2006 — Citrix Systems, Inc. (Nasdaq: CTXS), the global leader in application delivery infrastructure, today announced users can now click-to-call on telephone numbers embedded in any application deployed on Citrix Presentation ServerTM and automatically be connected to that number via their Cisco Unified IP Phones. Now, the more than 180,000 organizations worldwide using Citrix Presentation Server to deliver mission-critical client-server applications no longer need to switch out of their applications to make a call using their Cisco IP telephones.

“There’s a quantum leap in productivity when people using applications can jump seamlessly into telephony,” said Murli Thirumale, group vice president and general manager of the Advanced Solutions Group at Citrix. “By embedding click-to-call directly into existing applications, our customers will see tremendous improvements in both employee and business-process productivity.”

The primary goal of IP telephony in the enterprise has shifted from reducing network costs to creating business value through integrating communications into applications, which provides sustained improvements in user productivity and business-process productivity. As the number of business processes involving both applications and communications continues to increase, Cisco and Citrix are leading the way to this next generation of IP telephony by helping users take advantage of popular applications to communicate in richer and more meaningful ways.

Citrix and Cisco are working together to offer an easy-to-use solution that integrates Cisco Unified CallManager and Cisco Unified IP Phones with Citrix Presentation Server and Citrix Application GatewayTM to communications-enable existing applications, whether delivered with Citrix Presentation Server or deployed directly on the user’s personal computer. Citrix’s technology automatically identifies telephone numbers within applications and embeds pull-down buttons next to the telephone numbers. Users simply have to click on the pull-down menu next to the number, select “dial,” and the call is placed via their Cisco Unified IP Phones. By offering users the ability to click on the pull-down button next to the telephone number in an e-mail signature, for example, this technology eliminates manual dialing and misdialing and enhances productivity.

Citrix and Cisco are working together to offer an easy-to-use solution that integrates Cisco Unified CallManager and Cisco Unified IP Phones with Citrix Presentation Server and Citrix Application GatewayTM to communications-enable existing applications, whether delivered with Citrix Presentation Server or deployed directly on the user’s personal computer. Citrix’s technology automatically identifies telephone numbers within applications and embeds pull-down buttons next to the telephone numbers. Users simply have to click on the pull-down menu next to the number, select “dial,” and the call is placed via their Cisco Unified IP Phones. By offering users the ability to click on the pull-down button next to the telephone number in an e-mail signature, for example, this technology eliminates manual dialing and misdialing and enhances productivity.

“Citrix’s click-to-call application combined with our Cisco Unified CallManager has provided us with a solution that integrates applications and telephony in a way that is both easy for our employees to use and simple for me to administer,” said Parsram Rajaram, senior systems analyst at the City of Winter Park in Florida. “Since our employees can dial their IP telephones right from any application, they can collaborate without losing the precious time it takes to switch between applications or devices.”

Availability
Cisco is delivering click-to-call for Citrix Presentation Server applications as part of the Application Gateway and Citrix® Voice Office Application Suite through the Cisco Solutions Plus program. Cisco Solutions Plus is an innovative sales agency program where solutions from strategic development partners such as Citrix are offered to customers as part of a complete Unified Communications system through Cisco and its resellers. The Citrix Application Gateway and Voice Office suite of applications are available now from Cisco and its resellers.

About Citrix
Citrix Systems, Inc. (Nasdaq:CTXS) is the global leader and the most trusted name in application delivery infrastructure. More than 180,000 organizations worldwide rely on Citrix to deliver any application to users anywhere with the best performance, highest security and lowest cost. Citrix customers include 100% of the Fortune 100 companies and 98% of the Fortune Global 500, as well as hundreds of thousands of small businesses and prosumers. Citrix has approximately 6,200 channel and alliance partners in more than 100 countries. Annual revenue in 2005 was $909M.

For Citrix Investors
This release contains forward-looking statements which are made pursuant to the safe harbor provisions of Section 21E of the Securities Exchange Act of 1934. The forward-looking statements in this release do not constitute guarantees of future performance. Those statements involve a number of factors that could cause actual results to differ materially, including risks associated with revenue growth and recognition of revenue, products, their development and distribution, product demand and pipeline, economic and competitive factors, the Company’s key strategic relationships, acquisition and related integration risks as well as other risks detailed in the Company’s filings with the Securities and Exchange Commission. Citrix assumes no obligation to update any forward-looking information contained in this press release or with respect to the announcements described herein.

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Contact Information

Eric Armstrong

Director, Corporate Communications

Citrix Systems, Inc.

Contact via E-mail