Thinstall and Citrix Partner to Deliver Virtualized Citrix Presentation Server Client for USB Drives

-- Thinstall application virtualization technology enables the Citrix Presentation Server Client to run without installation or modification of the registry or file system - ideal for distribution with USB drives and for mobile users

Thinstall, the leader in portable application virtualization, andCitrix Systems, Inc. (Nasdaq:CTXS), the global leader in accessinfrastructure solutions, today announced the availability of theThinstall Virtualized Citrix Presentation Server(TM) Client. Byvirtualizing the widely-used Citrix (ICA(R)) access client withThinstall technology, Citrix and Thinstall now provide an easy to use,powerful solution for end users, ISV partners, and corporate ITorganizations that enables immediate access to Citrix PresentationServers via a secure USB key.

Thinstall virtualization solves a significant problem in deployingUSB applications (in this case the Citrix ICA client) by completelyeliminating installation and changes to the host PC. Withoutvirtualization, applications may not run from USB devices becauseinstallers need elevated administrative privileges to write systemfiles and registry keys. Additionally, applications may leave behindsensitive files on unsecured computers. Thinstall eliminates thesecritical problems for corporate IT users, making the CitrixPresentation Server Client instantly and securely available on any PC.

"Previously, end users needed to carry a laptop when they went onthe road to have access to their corporate Citrix Presentation Serverenvironment," said Jonathan Clark, Thinstall President and Founder."With Thinstall, the Citrix Presentation Server Client can be launchedfrom a locally running Internet Explorer session without elevatedsecurity privileges. Thinstall enables end-users to access theircorporate Citrix servers from any PC in the world without installingActiveX components or the Java runtime. Also, Thinstall secures theaccess because session data, browser history, and temporary data filesare loaded and stored from the USB drive, never leaving behindsensitive corporate data."

"Citrix is dedicated to expanding our Access Platform by enablingour partners," said Chris Fleck, vice president of platformdevelopment for Citrix. "USB applications integrated with two factorsecurity devices are growing quickly in popularity with our enterprisecustomers. Thinstall has a unique, solid virtualization solution andby working together, we have provided both our solution partners andenterprise customers with a Presentation Server Client that they canbundle with these new applications to provide secure access to anyCitrix environment."

The Thinstall Virtualized Citrix Presentation Server Clientprovides the following features and benefits that are ideal for usewith USB drives, remote access, and mobile users:

-- Instant Citrix access without installation - The single Thinstall compressed EXE enables the Citrix Presentation Server Client to be carried conveniently on a USB key drive or CDROM and runs regardless of what is - or isn't - already on the host computer. This eliminates technical support hassles and makes Citrix access easy for mobile users.

-- Works on locked-down PCs - Administrator-lever user privileges are not required because the Thinstall Virtualized Citrix Presentation Server Client does not have to be installed or anything modified on the host PC, allowing users to have universal access anywhere they go.

-- Sensitive information is kept secure - While running under Thinstall, Internet Explorer browser history and temporary files are loaded and stored directly from the USB drive ensuring no trace is left behind. As well, Citrix Presentation Server client configuration settings are loaded and stored directly from the USB drive preventing the user from accidentally leaving behind their login name, password, or session cache data.

The Thinstall Solution

Thinstall enables the deployment of software applications withoutrequiring installation, system modifications, or elevated securityprivileges. It allows software to be delivered and updated in anisolated environment ensuring the integrity, stability, and securityof the host file system and registry. Thinstall works completely inuser mode with no device drivers, which means it can run on allversions of Windows 95+ without Administrator Rights. The ThinstallVirtual OS technology component is less than 300K on disk, occupiesapproximately 1 MB RAM at runtime, and has neglible impact on memoryconsumption and CPU performance. Applications can be packaged withoutany source code changes for use with a USB key or other distributionmethod.

"With this partnership, Citrix customers and partners can utilizeThinstall's advanced technology for any Windows platform from anyportable storage device," continues Jonathan Clark. "Citrix is acompelling example of how virtualization changes how business thinkabout software. With this partnership, Thinstall is able to broadenour reach to more enterprises."

The Thinstall Virtualized Citrix Presentation Server Client wasreleased in February 2006 and is available for download athttp://www.citrix.com or http://www.thinstall.com.

About Citrix

Citrix Systems, Inc. (Nasdaq:CTXS) is the global leader and mosttrusted name in on-demand access. More than 160,000 organizationsaround the world use the Citrix Access Platform to provide the bestpossible access experience to any application for any user. Citrixcustomers include 100% of the Fortune 100 companies and 98% of theFortune Global 500, as well as hundreds of thousands of smallbusinesses and individuals. Citrix has approximately 6,200 channel andalliance partners in more than 100 countries. Citrix annual revenuesin 2005 were $909 million. Learn more at http://www.citrix.com.

About Thinstall

Founded in 1999, Thinstall the leader in portable applicationvirtualization, a next generation technology that enables faster andeasier software deployment. Thinstall eliminates time consumingsoftware conflicts and deployment issues. For any company thatdevelops custom enterprise or commercial applications - both CorporateIT and Software Publishers - deployment of software with Thinstallbecomes effortless; installation itself is eliminated. Cost savingsare instantly attained through the reduction of time to test for crossapplication compatibility, and by the elimination of post-installconflict resolution.

Thinstall has deployed thousands of applications to millions ofdesktops around the world. Customers include GE, the US Department ofDefense, Qualcomm, Lucent, Northrop Grumman, Morgan Stanley,T-Systems, and Abbott Labs. Thinstall is privately held with companyheadquarters in San Francisco, CA. For more information, please visitthe company's Web site at http://www.thinstall.com or call415-274-2558 x22.

Citrix(R), ICA(R) and Citrix Presentation Server(TM) aretrademarks of Citrix Systems, Inc. and/or one or more of itssubsidiaries, and may be registered in the U.S. Patent and TrademarkOffice and in other countries. Thinstall is a registered trademark ofJitit. All other trademarks and registered trademarks are property oftheir respective owners.