Unix By Ztaaarrr 1981 UNIX System III 1982 UNIX System IV 1983 UNIX System V 1984 UNIX System V Release 2 1986 UNIX System V Release 3.0 1987 UNIX System V Release 3.2 1988 UNIX System V Release 4 1992 UNIX System V Release 4.2 1993 UnixWare 1.1 1994 UnixWare 1.1.1 1995 UnixWare 2.0 1996 UnixWare 2.1 1996 UnixWare 2.1.2 1998 UnixWare 7 1999 UnixWare 7.1 2001 Open Unix 8 (UnixWare 7.1.2) 2002 SCO UnixWare 7.1.3
