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Citrix WinFrame

XenApp
Developer(s) Citrix
Stable release
7.12 (Dec 7, 2016)
Operating system Microsoft Windows
Type Application virtualization
License Proprietary
Website www.citrix.com

XenApp is application virtualization software produced by Citrix Systems that allows Windows applications to be accessed via individual devices from a shared server or cloud system. XenApp was first released in 2008, but earlier versions of the product were called WinFrame, MetaFrame, and Presentation Server.

XenApp is application virtualization software that delivers centrally-hosted Windows applications to local devices without the necessity of installing them. It is the flagship product for Citrix and was formerly known under the names WinFrame, MetaFrame, and Presentation Server.

XenApp software uses FlexCast Management Architecture (FMA), a proprietary architecture for Citrix virtualization products. It delivers individual applications, as opposed to entire desktops, to devices. It is also used with XenDesktop to deliver apps as part of a complete virtual desktop environment.

With XenApp, Windows applications can be used on devices that typically could not run them, including Macintosh computers, mobile devices, and Google Chromebooks. Conversely, it enables otherwise incompatible apps to run on Windows desktops.

XenApp is accessed on all devices via Citrix Receiver. The software can be delivered from on-premises data centers or public, private, or hybrid clouds.

The precursor to XenApp was called WinFrame, a multi-user operating system based on Windows NT 3.51. Released in 1995, WinFrame was one of the first products distributed by Citrix. At this stage of the product development Citrix Systems licensed the Windows NT 3.51 base operating system from Microsoft. The core development that Citrix delivered was the MultiWin engine. This allowed multiple users to logon and execute applications on a WinFrame server. Citrix was to later license the MultiWin technology to Microsoft, forming the basis of Microsoft's Terminal Services.


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