UNIX AND ITS DERIVATIVES
This section lists variants of the UNIX operating system, including the
standard versions from AT&T and The University of California at Berkeley,
and various commercial implementations that bear different names but are
substantially similar. Fully identical implementations are not listed. Systems
that are based on UNIX but include substantial differences, such as distributed
processing, real-time facilities, or simplified versions for microcomputers,
are listed in other sections as appropriate.
- Berkeley UNIX
- Version of UNIX for VAX, developed at the University of California
at Berkeley. Late 1970s through early 1990s. Latest version is 4.4.[Quarterman
et al 1985].
- BSD UNIX
- Berkeley Standard Distribution. Official name for Berkeley UNIX.
- Version of UNIX. Mark Williams Corp. Early 1980s.
- UNIX System V port for Cromemco (68000 CPU). Cromemco Corp., Late 1970s.
- DRM System
- UNIX-Compatible system for 68000. NV Philips. [Mini-Micro 1985].
- UNIX version for the NSC 32016. National Semiconductor [Mini-Micro
- A public domain OS under development by Richard Stallman and the Free
Software Foundation. Expected to be fully compatible with UNIX. The name
stands for "Gnu is Not UNIX."
- Version of UNIX. 68000, 8086, PDP-11, VAX. Whitesmiths, Ltd. Late 1970s
[Plauger & Krieger 1980].
- UNIX lookalike for the Artisan DP-09 (6809 CPU). Based partly on Uniflex.
Introl Corp., Mid 1980s.
- Version of UNIX (System 3) for PDP-11 and VAX. Interactive Systems
- Version of UNIX. Onyx Corp.
- Operating System for Pyramid Computers. Supports UNIX System V and
BSD 4.2 concurrently. Early 1980s.
- Version of UNIX for 8086. IBM. [Mini-Micro 1985].
- Small, inexpensive UNIX lookalike. Wendin Corp. Mid 1980s.
- Unix lookalike for 80286 and others. Quantum Software Systems. Early
- Version of UNIX. Alcyon Corp. 68000 family.
- UNIX compatible OS for the PDP-11. Human Computing Resources.
- SCO UNIX
- Version of UNIX for Z8002. SGS-Ates. [Mini-Micro 1985].
- System V
- Standard version of UNIX licensed and distributed by AT&T. Early
- Version of UNIX for DEC PDP-11 and VAX. Digital Equipment Corp. Early
1980's. [Digital 1984].
- Version of UNIX for the 68000 family. Unisoft Systems Corp.
- Version of UNIX for PDP-11. Uniq Digital Technologies. [Digital 1984].
- Version of UNIX for the DEC PDP-11 and VAX. Human Computing Resources.
- Widely used OS developed by Ken Thompson and Dennis Ritchie at Bell
Laboratories around 1970. Based somewhat on MULTICS. Name probably derived
from MULTICS, with "uni" signifying a single-user system. Many
versions and imitators. Originally on DEC PDP-7 and PDP-11. Ported to VAX,
M68000, and various other processors. Early 1970s [Ritchie & Thompson
1974, Thompson 1978, Bach 1986].
- UNIX-compatible real-time OS. Charles River Data Systems [Mini-Micro
- Version of UNIX (System V) for 8086 family, LSI-11. Venturcom [Mini-Micro
- Version of UNIX for various CPUs. Microsoft Corp.
- Version of UNIX. Zilog Corp. Late 1970s [Zarella 1982].