UNICS september 1969UNIX Time-Sharing System First Edition (V1) november 3, 1971UNIX Time-Sharing System Second Edition (V2) june 12, 1972Open Systems february 27, 2011 Éric Lévénez 1998-2011UNIX Time-Sharing System Third Edition (V3) february 197319721969197119701973UNIX Time-Sharing System Fourth Edition (V4) november 1973UNIX Time-Sharing System Fifth Edition (V5) june 1974MERT 1974PWB/UNIX 1974UNIX Time-Sharing System Sixth Edition (V6) may 1975LSXMini Unix may 1977SRI EunicePWB 1.0 july 1, 1977RT 1.0 1977TS 1.0 1977USG 1.0UNSW19761975197419771BSD march 9, 1978CB UNIX 1UNIX Time-Sharing System Seventh Edition (V7) january 1979TS 2.0 1978PWB 2.0 1978USG 2.0PWB 1.22BSD may 10, 1979UNIX 32V may 1979Interactive IS/1USG 3.0CB UNIX 2TS 3.0 19793BSD march 19802.79BSD april 1980TS 3.0.1 1980CB UNIX 34.0BSD october 1980XENIX OS august 25, 1980UCLA Secure Unix 1979UCLA Locally Cooperating Unix Systems 1980UNIX Time-Sharing System Seventh Edition Modified (V7M) december 1980V7appenda february 12, 1980UNSW 01 january 1978UNSW 04 november 1979 BRL Unix V4.1 july 1979198019781979The Wollongong Group Eunice (Edition 7) 1980Note 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 1981TS 5.0 1982UNIX System III november 19814.1aBSD april 19822.8.1BSD january 19824.1bBSD august 1982SunOS 1.0 february 19822.8BSD july 1981Ultrix-11UNIX System IV 1982TS 4.0.1 19812.8.2BSD september 8, 19822.9BSD july 19832.9.1BSD november 19834.1cBSD december 19824.2BSD september 1983XENIX 3.0 april 1983UNIX System V january 1983TS 5.2 1983IS/3HP-UX 1.0 (S500) H1 1983PC/IXQUNIX 1981QNX beta 1983XENIX 2.3Locus 1983UCLA Locus 1981 VenixUNSW 81 april 1981V7M 2.1 october 1981Coherent june 1983Sinixmt Xinu july 19, 1983198319811982SPIX 1982Eunice 2 1982Tunis 1981Plurix 1982UniSoft UniPlus System V 1983UniSoft UniPlus V7 1981IRIS GL2 1.0 1983HP-UX 2.0 (S200) august 1983UNIX System V Release 2 april 1984UNIX Time-Sharing System Eighth Edition (V8) february 1985SunOS 1.1 april 1984Interactive 386/ix 1985MinixA/UX Mach 1985Xinu 1984SunOS 1.2 january 1985SunOS 2.0 may 15, 19852.9BSD-Seismo august 1985Ultrix 32M 1.0 1984IS/54.3BSD june 1986SunOS 3.0 february 17, 1986UNIX System V Release 3.0 1986Chorus 1986HP-UX 1.0 (S800) november 20, 1986Mach 2.0SunOS 3.2 september 1986UNIX Time-Sharing System Ninth Edition (V9) september 1986Plan 9MIPS OS RISC/osDynix 1984Unicos 2.0 december 19, 1986Unicos 1.0 april 3, 1986CXOs 0.9 sept. 1985QNX 1.0 1984SCO XENIX System V/286 1985SCO XENIX 3.0 february 1984IBM IX/370 1985Locus 1985AIX/RT 2 1986Venix/286Ultrix 32M 1.2 1985Venix 1.0 1985Venix 2.0 1986Ultrix-11 v3.0 1986Ultrix-11 v3.1 1986BRL Unix (4.3BSD) 1986BRL Unix (4.2BSD) 1985mt Xinu (4.2BSD)mt Xinu (4.3BSD)UNIX System V/286 1985UNIX System V/386 rel 3.0198419851986GNU (Trix) 1986SPIX 32Eunice 4.2 1985Microport Unix SV/ATjanuary 1986CXOs 1984IRIS GL2 5.0 dec. 1986IRIS GL2 4.0 march 1986IRIS GL2 1.5 mid-1984IRIX 1986HP-UX 2.0 (S500) H1 1984HP-UX 2.1 (S500) september 1984HP-UX 2.1 (S200) H1 1985HP-UX 5.0 (S200/S300) H1 1986HP-UX 5.1 (S200/S300) H1 19862.10BSD april 1987UNIX System V Release 3.2 1987Mach 2.5 19884.3BSD Tahoe june 1988HP-UX 1.1 (S800) august 17, 1987UNIX System V Release 4 1988UNIX Interactive 4.1 1988NeXTSTEP 0.8 october 12, 1988Xinu 7 march 1988AIX/RT 2.1.2Chorus/MiX V3.2 1988BSD Net/1 november 1988IBM AOS 1988MIPS OS RISC/os 42.10.1BSD january 1989SunOS 4.0 1989NeXTSTEP 1.0 september 18, 1989UNIX Time-Sharing System Tenth Edition (V10) october 1989SCO UNIX System V/386 release 3, 1989AIX/6000 v3 1989HP-UX 7.0(S300/S800)H2 1989SunOS 4.0.3 may 1989SunOS 3.5 1988HP-UX 2.0 (S800) march 1988HP-UX 3.1 feb. 1989A/UX 1.0 february 1988AIX/RT 2.2.1 1987SCO XENIX System V/386 october 1987Unicos 3.0 september 25, 1987Unicos 4.0 july 15, 1988Unicos 5.0 may 15, 1989Minix 1.0 1987QNX 2.0QNX 2.21SCO XENIX System V/386 release 2.3.4 june 1989AIX PS/2 1.1 march 31, 1989 Venix 3.2.3Venix 3.2Ultrix 4.2Sinix 2.0 1987Sinix 2.1 1988more/BSD december 1988mt Xinu mach386HPBSD 1987HPBSD 1.0 april 1988UNIX System V/386 Release 3.2UNIX System V/386 Release 4CTIX/386CTIX 3.0CTIX 3.2CTIX 4.0198919881987Acorn RISC iX 1989Atari Unix 1989Ultrix 32M 2.0 1987BOS 1989NonStop-UX april 10, 1987NonStop-UX B00 august 22, 1989Eunice 4.3 1987Acorn RISC Unix 1988Microport Unix V/386 september 1987IRIX 3.0 june 10, 1988IRIX 2.0 november 18, 1987IRIS GL2 6.0 1987Dell Unix SVR1.1 november 1, 1989 HP-UX 5.2 (S300) H2 1987HP-UX 6.0 (S300) H2 1987HP-UX 6.2 (S300) june 1988HP-UX 6.5 (S300) H1 1989HP-UX 1.2 (S800) nov. 16, 1987HP-UX 2.1 (S800) july 1988HP-UX 3.0 (S800) nov. 11, 1988HP-UX 7.02(S800)H2 19892.11BSD february 1992Chorus/MiX SVR4 1991AIX 3.1 1990Plan 9 19904.3BSD Reno june 1990BSD Net/2 (4.3BSD Lite) june 1991386 BSD 0.0 february 19。