Note that each of the iterations of the UNIX Time-Sharing System are evolved from the version before, with version one evolving from the prototypal UNICS. Not all variants and descendants of UNIX are displayed.

  • UNICS (1969)
  • UNIX Time-Sharing System v1 (1971)
  • UNIX Time-Sharing System v2 (1972)
  • UNIX Time-Sharing System v3 (1973)
  • UNIX Time-Sharing System v4 (1973)
  • UNIX Time-Sharing System v5 (1974)
  • UNIX Time-Sharing System v6 (1974)
    • Mini Unix (1977)
    • PWB 1.0 (1977)
      • USG 1.0
        • CB Unix 1
    • UCLA Secure UNIX (1979)

  • UNIX Time-Sharing System v7 (1979)
  • UNIX Time-Sharing System v8 (1985)
  • UNIX Time-Sharing System v9 (1986)
  • UNIX Time-Sharing System v10 (1989)

AT&T UNIX Systems & descendants

Each of the systems in this list is evolved from the version before, with Unix System III evolving from both the UNIX Time-Sharing System v7 and the descendants of the UNIX Time-Sharing System v6.

  • Unix System III (1981)
  • Unix System IV (1982)
  • Unix System V (1983)
  • Unix System V Release 2 (1984)
  • Unix System V Release 3.0 (1986)
  • Unix System V Release 3.2 (1987)
  • Unix System V Release 4 (1988)
  • Unix System V Release 4.2 (1992)
  • UnixWare 1.1 (1993)
  • UnixWare 1.1.1 (1994)
  • UnixWare 2.0 (1995)
  • UnixWare 2.1 (1996)
  • UnixWare 2.1.2 (1996)
  • UnixWare 7 (1998)
  • UnixWare 7.0.1 (1998)
  • UnixWare 7.1 (1999)
  • UnixWare 7.1.1 (1999)
  • UnixWare NSC 7.1+IP (2000)
  • UnixWare NSC 7.1+LKP (2000)
  • UnixWare NSC 7.1DCFS (2000)
  • Open Unix 8 (2001)
  • Open Unix 8MP1 (2001)
  • Open Unix 8MP2 (2001)
  • Open Unix 8MP3 (2002)
  • Open Unix 8MP4 (2002)
  • SCO UnixWare 7.1.3 (2002)
  • SCO UnixWare 7.1.3 Update Pack 1 (2003)

Minix

Each of the systems in this list is evolved from the version before, with Minix 1.0 evolving from the UNIX Time-Sharing System v7.

Linux kernel

Each of the kernels in this list is evolved from the kernel before, with Linux 0.01 inspired by Minix 1.0.

External link