WinFrame 1.7

Citrix WinFrame provided remote desktop and application tunneling on a customized Windows NT 3.51. This is the same technology that was later evolved into Windows NT 4.0 Terminal Services edition and the Windows 2000+ Remote Desktop. As Microsoft integrated remote desktop in to Windows, Citrix once again had to reinvent themselves and changed to MetaFrame, an add-on to Windows that provided various additional bits of functionality.

The product originated as Citrix Multiuser, an OS/2 1.x based multiuser terminal mode system.