UNICS
september 1969
UNIX Time-Sharing System
First Edition (V1)
november 3, 1971
UNIX Time-Sharing System
Second Edition (V2)
june 12, 1972
Open Systems
february 27, 2011
Éric Lévénez 1998-2011
<http://www.levenez.com/unix/>
UNIX Time-Sharing System
Third Edition (V3)
february 1973
19721969 19711970 1973
UNIX Time-Sharing System
Fourth Edition (V4)
november 1973
UNIX Time-Sharing System
Fifth Edition (V5)
june 1974
MERT
1974
PWB/UNIX
1974
UNIX Time-Sharing System
Sixth Edition (V6)
may 1975
LSX
Mini Unix
may 1977
SRI Eunice
PWB 1.0
july 1, 1977
RT 1.0
1977
TS 1.0
1977
USG 1.0
UNSW
197619751974 1977
1BSD
march 9, 1978
CB UNIX 1
UNIX Time-Sharing System
Seventh Edition (V7)
january 1979
TS 2.0
1978
PWB 2.0
1978
USG 2.0
PWB 1.2
2BSD
may 10, 1979
UNIX 32V
may 1979
Interactive
IS/1
USG 3.0
CB
UNIX 2
TS 3.0
1979
3BSD
march 1980
2.79BSD
april 1980
TS 3.0.1
1980
CB UNIX 3
4.0BSD
october 1980
XENIX OS
august 25, 1980
UCLA Secure Unix
1979
UCLA Locally Cooperating
Unix Systems
1980
UNIX Time-Sharing System
Seventh Edition Modified
(V7M)
december 1980
V7appenda
february 12, 1980
UNSW 01
january 1978
UNSW 04
november 1979
BRL Unix V4.1
july 1979
19801978 1979
The Wollongong Group
Eunice (Edition 7)
1980
Note 1 : an arrow indicates an inheritance like a compatibility, it is not only a matter of source code.
Note 2 : this diagram shows complete systems and [micro]kernels like Mach, Linux, the Hurd... This is because
sometimes kernel versions are more appropriate to see the evolution of the system.
4.1BSD
june 1981
TS 5.0
1982
UNIX System III
november 1981
4.1aBSD
april 1982
2.8.1BSD
january 1982
4.1bBSD
august 1982
SunOS 1.0
february 1982
2.8BSD
july 1981
Ultrix-11
UNIX System IV
1982
TS 4.0.1
1981
2.8.2BSD
september 8, 1982
2.9BSD
july 1983
2.9.1BSD
november 1983
4.1cBSD
december 1982
4.2BSD
september 1983
XENIX 3.0
april 1983
UNIX System V
january 1983
TS 5.2
1983
IS/3
HP-UX 1.0 (S500)
H1 1983
PC/IX
QUNIX
1981
QNX beta
1983
XENIX 2.3
Locus
1983
UCLA Locus
1981
Venix
UNSW 81
april 1981
V7M 2.1
october 1981
Coherent
june 1983
Sinix
mt Xinu
july 19, 1983
19831981 1982
SPIX
1982
Eunice 2
1982
Tunis
1981
Plurix
1982
UniSoft
UniPlus
System V
1983
UniSoft
UniPlus V7
1981
IRIS
GL2 1.0
1983
HP-UX 2.0 (S200)
august 1983
UNIX System V
Release 2
april 1984
UNIX Time-Sharing System
Eighth Edition (V8)
february 1985
SunOS 1.1
april 1984
Interactive 386/ix
1985
Minix
A/UX
Mach
1985
Xinu
1984
SunOS 1.2
january 1985
SunOS 2.0
may 15, 1985
2.9BSD-Seismo
august 1985
Ultrix 32M 1.0
1984
IS/5
4.3BSD
june 1986
SunOS 3.0
february 17,
1986
UNIX System V
Release 3.0
1986
Chorus
1986
HP-UX 1.0 (S800)
november 20, 1986
Mach 2.0
SunOS 3.2
september 1986
UNIX Time-Sharing System
Ninth Edition (V9)
september 1986
Plan 9
MIPS OS
RISC/os
Dynix
1984
Unicos 2.0
december 19, 1986
Unicos 1.0
april 3, 1986
CXOs 0.9
sept. 1985
QNX 1.0
1984
SCO XENIX
System V/286
1985
SCO XENIX 3.0
february 1984
IBM IX/370
1985
Locus
1985
AIX/RT 2
1986
Venix/286
Ultrix 32M 1.2
1985
Venix 1.0
1985
Venix 2.0
1986
Ultrix-11 v3.0
1986
Ultrix-11 v3.1
1986
BRL Unix
(4.3BSD)
1986
BRL Unix
(4.2BSD)
1985
mt Xinu
(4.2BSD)
mt Xinu
(4.3BSD)
UNIX System
V/286
1985
UNIX System
V/386 rel 3.0
1984 1985 1986
GNU (Trix)
1986
SPIX 32
Eunice 4.2
1985
Microport
Unix SV/AT
january 1986
CXOs
1984
IRIS GL2 5.0
dec. 1986
IRIS GL2 4.0
march 1986
IRIS GL2 1.5
mid-1984
IRIX
1986
HP-UX 2.0 (S500)
H1 1984
HP-UX 2.1 (S500)
september 1984
HP-UX 2.1 (S200)
H1 1985
HP-UX 5.0
(S200/S300)
H1 1986
HP-UX 5.1 (S200/S300)
H1 1986