MultiWin

MultiWin, a technology developed by Citrix Systems, originally created the concept of Terminal Server on the Win32 platform. It allows multiple simultaneous users to log on to a Terminal Server, run applications, and share resources such as the CPU, memory, and I/O ports.

Microsoft's first release of Terminal Server was Windows NT 4.0 Terminal Server Edition (TSE), which was built on Citrix's MultiWin technology. Prior to Windows NT 4.0 TSE, Microsoft had licensed Windows to Citrix. Previously, Citrix offered WinFrame, which was essentially a multiuser operating system based on Microsoft Windows NT 3.51.