Citrix Virtual Apps (formerly WinFrame, MetaFrame, Presentation Server and XenApp) is an application virtualization software produced by Citrix Systems that allows Windows applications to be accessed via individual devices from a shared server or cloud system.
[3] It is also used with Citrix Workspace to deliver apps as part of a complete virtual desktop environment.
[5] The software can be delivered from on-premises data centers[6] or public, private, or hybrid clouds.
[3][4] The precursor to Virtual Apps was called WinFrame, a multi-user operating system based on Windows NT 3.51.
[9] In 2012, XenApp 6.5 was released and this update included a new feature called Instant App Access, which aimed to reduce application launch time.
However, it is still releasing new Virtual Apps and Desktops versions, to meet the needs of customers who prefer or require an on-premise solution.