Windows NT 3.1
Windows NT 3.1 is an operating system by Microsoft released in 1993. It was the first Windows NT version and the Windows NT edition for Windows 3.1. It was preceded by Windows 3.1 and was succeded by Windows NT 3.5. Windows 3.1 was available in two editions: Windows NT 3.1 for workstations, and Windows NT 3.1 Advanced Server for servers.