A Unix-alike developed by Microsoft. At one time available from IBM for the PC. SCO (Santa Cruz Operations, now part of Caldera International) ended up with Xenix, but have put all their efforts behind UnixWare, which they acquired from Novell.
One of the first versions of UNIX to run on IBM PCs, and one of the few that will run on 80286 systems. XENIX descends from Version 7 UNIX, a version developed by AT&T in the late 1970s. It has many resemblances to BSD UNIX. Over time, XENIX has been rewritten as a variant of System V.2.
n. A version of UNIX that was originally adapted by Microsoft for Intel-based personal computers. Although it has been sold by many vendors, including Microsoft, Intel, and the Santa Cruz Operation (SCO), it has become principally identified with SCO. See also UNIX.
Xenix was a version of the Unix operating system, licensed by Microsoft from AT&T in the late 1970s. The Santa Cruz Operation (SCO) later acquired exclusive rights to the software, and eventually began distributing it as SCO UNIX.