Citrix Brings Web 2.0 Applications Closer to the Enterprise with Acquisition of QuickTree.

Move Expands Citrix's Growing Leadership in Application Delivery Market, Giving Customers the Best Way to Leverage XML Enabled Applications and Next-Generation Service Oriented Architectures

FORT LAUDERDALE, Fla. -- Citrix Systems, Inc. (NASDAQ: CTXS), the global leader in application delivery infrastructure, today announced it has acquired QuickTree, a small privately-held software technology provider on the forefront of addressing the key security and performance challenges of XML and web services. This move will further strengthen Citrix's end-to-end application delivery infrastructure by enabling it to incorporate more robust XML processing capabilities across the Citrix application networking product line, which includes Citrix[R] NetScaler[R], Citrix WANScaler[TM] and Citrix Access Gateway[TM] and is focused on the acceleration, optimization and secure accessibility of applications.

Enterprise application development and architecture is undergoing a rapid transformation as enterprise mash-ups emerge and user interfaces become richer with the use of AJAX (Asynchronous JavaScript and XML) and Web 2.0. At the same time, the applications themselves are getting componentized using SOA (Service-Oriented Architectures). This transformation brings increased flexibility, extensibility and standardization for application developers and end users, but also creates new challenges for IT managers charged with delivering these applications. To address these performance, security and management challenges, some IT organizations have begun deploying standalone XML appliances in the network. While these point product solutions can be useful in some situations, Citrix believes a far more scalable approach is to incorporate XML processing directly into a company's existing application delivery infrastructure as a fully integrated feature.

Citrix will accomplish this by integrating the QuickTree technology into the AppExpert policy framework used by its application networking products to configure application-specific and user-specific policies. The new XML-fluent AppExpert capabilities will first be applied to the company's NetScaler product line, enhancing its application traffic management, attack defense and optimization features. With an estimated 75 percent of all Internet users going through a Citrix NetScaler system on any given day, Citrix has long been the leader in application delivery infrastructure for the world's most demanding web applications. Merging that expertise with QuickTree is a logical next step to enhance the delivery of both enterprise and consumer XML-based applications and improve the experience for end users. For more information on AppExpert please visit http://www.citrix.com/English/ps2/products/ subfeature.asp?contentID=165754. (Due to its length, this URL may need to be copied/pasted into your Internet browser's address field. Remove the extra space if one exists.)

"Citrix continues to research, develop and acquire leading technologies that give the company a unique position in the market, solving the complete end-to-end application delivery challenge for companies of all sizes," said Klaus Oestermann, vice president and general manager for application networking at Citrix. "As Web 2.0 technologies for the enterprise emerge, we see the increasing need for the entire application delivery infrastructure to be more XML-fluent. With the acquisition of QuickTree's core technology and engineering talent, Citrix is staying ahead of that trend and allowing its customers to remain on the cutting edge."

Terms of the Deal

The financial terms of the agreement were not disclosed. Effective immediately, QuickTree employees, including CEO Raghu Bathina, will join the Citrix teams in Santa Clara, CA and Bangalore, India, reporting into the Application Networking Group.

About Citrix

Citrix Systems, Inc. (NASDAQ:CTXS) is the global leader and the most trusted name in application delivery infrastructure. More than 200,000 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 2006 was $1.1 billion.

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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