Non Unix family tree and Timeline Version 0.3.2 1958 FMS SOS 1958 Late 1950's Late 1950's 1960 1960 IBM 1410/1710 OS Early 1960's CTSS 1961-1962 1962 IBSYS PDP-1 OS 1962 Early 1960's 1962 SABRE 1962-64 EXEC I 1964 Tops-10 1.4 1964 1964 Early 1960's OS/360 Multics TOS (BOS, TOS,DOS) 1965 1965 EXEC II Early 1960's DOS CP-40 1966 (CP-67) Tops-10 1.9 MS/8 1966 1966 1966 1966 CAL BPS/360 CP/CMS Tops-10 2.18 Late 1960's ITS WAITS EXEC 3 Late 1960's 1967 1967 1967 1967 Late 1960's DOS/VSE 1968 PARS Tops-10 3.27 1968 1968 SCOPE TDOS 1968 Late 1960's EXEC 4 Late 1960's Late 1960's VMOS ACP v4 EXEC 8 OS/MFT Tops-10 4.50 ACP TENEX Unix Late 1960's 1969 1969 1969 1969 MSS 4.0 1969 Late 1960's Tops-10 4.72 10/1969 1969 MSS 5.0 1970 12/1969 1970 Tops-10 5.01 DOS/Batch 11 MSS 6.0 1970 1970 3/1970 MSS 7.0 3/1970 MSS 8.0 6/1970 1971 RSTS-11 1971 1971 Tops-10 5.02 Tape Scope 2 KRONOS 1971 OS/8 Early 1970's Early 1970's VS/9 Chios 1971 VM/CMS Earl 1970's Early 1970's 1972 OS/VS1 Tops-10 5.03 BKY 1972 1972 1972 Early 1970's Tops-10 5.04 5/1972? KI-TELNEX Tops-10 5.05 mid 1972 7/1972? Tops-10 5.06 1973 11/1972 1973 VSE RSX-11D 5/1973 RT-11 OS/12 Alto 7/1973 1973 OS/VS2 r1 1974 1974 MSS 22.0 1974 RSX-11M 1/1974 1974 Tops-10 5.07 Tops-10 6.01 MR 1.0 CP/M 1.0 5/1974 5/1974 6/1974 1974 OS/VS2 r2 7/1974 1975 1975 OS/VS2 MVS r3 3/1975 Tops-10 5.07A Tops-10 6.01A 5/1975 5/1975 CP/M 1.3 1976 Tops-10 6.02 1975 RSX-11M Plus 1976 Tops-20 1 MSS 28.0 1976 2/1976 2/1976 Tops-20 1A 4/1976 Tops-20 1B 10/1976 Tops-20 101B 12/1976 1977 1977 Tops-10 6.03 p-System I.0 3/1977 VSE/SP MVS/SP RSX-11M Plus RSX-11S Micro/RSX p-System I.3 p-System I.4 p-System I.5 Tops-20 2 8/1977 RT-11 5.7 7/1977 EMAS Late 1970's 1978 1978 Tops-10 6.03LIR VMS 1.0 Tops-20 3 2/1978 2/1978 1/1978 AppleDOS 3.0 6/1978 VMS 1.5 AppleDOS 3.1 1978 7/1978 Tops-20 3A 9/1980 1979 ACP v9.2.1 1979 2/1979 AppleDOS 3.2 p-System II.0 2/1979 EMAS 2900 p-System II.1 OS-9 MVS/370 Late 1970's CP/M 2.0 1979 ACP/TPF 1979 Tops-10 7.00 1979 AppleDOS 3.2.1 12/1979 8/1979 7/1979 Apple II Pascal 1.0 8/1979 p-System III.0 1980 VMS 2.0 CP/M 2.2 MP/M-80 1980 4/1980 Tops-20 4 1980? CCPM-80 4/1980 CCP/M-68k Apple CP/M RSTS/E v5.7 CP/M-80 QDOS 0.1 3/1980 AppleDOS 3.3 8/1980 1980 VMS 2.1 8/1980 Apple II Pascal 1.1 1980? Tops-10 7.01 1980 86-DOS 0.3 SOS 1.0 8/1980 12/1980 11/1980 1981 MVS/XA VMS 2.2 1981 VM/SP 1981 1981 SOS 1.1 Star RSTS/E 8 VMS 2.3 2/1981 1981 1981 VMS 2.4 PC DOS 1.0 12/8/1981 1981 MP/M II MP/M-86 VMS 2.5 RSTS/E 10.1 1981? PC DOS 1.1 p-System IV.0 1982 VMS 3.0 Tops-20 5.0 CP/M-Z80 1982 MS DOS 1.24 5/1982 1982? 4/1982 1/1982? 6/1982 VMS 3.1 Apple II Pascal 1.2 1982 MS DOS 1.25 CP/M Plus (3.0) CP/M-68k VMS 3.2 7/1982 Q4 1982? 1982-1984 SOS 1.3 1982 11/1982 VMS 3.3 1983 1982? LisaOS 1983 1/1983 MS DOS 2.0 PC DOS 2.0 3/1983 3/1983 MS DOS 2.01 NetWare 1 5/1983 1983 CP/M-86 CCP/M-86 Apple ProDOS 1.0 PC DOS 2.1 9/1983 9/1983 10/1983 Tops-10 7.02 10/1983 MS DOS 2.11 12/1983 DRI GEMDOS Apple ProDOS 1.0.1 1984 12/1983 System 1.0 1984 VMS 3.4 (Atari ST) 1/1984 1/1984 1984? MS DOS 2.11 1984 Apple ProDOS 1.0.2 MacWorks 12/1983 2/1984 VMS 3.5 SIBO OS 1984 TOS 1.00 1984 (GEMDOS 0.13) VMS 3.5 1984 GEM/1 System 2.0 VMS 3.7 PC DOS 3.0 1985 Apple ProDOS 1.1 1984 8/1984 8/1984 VMS 4.0 DR C PC DOS 3.2 Apple ProDOS 1.1.1 9/1984 10/1984 9/1984 MS DOS 3.05 PC DOS 3.10 Apple II Pascal 1.3 VMS 4.1 11/1984 11/1984 11/1984 1984 CDOS 4.1 1985 7/1985 1985 MS DOS 3.1 CDOS/XM 5.0 3/1985 7/1985 GEM/2 DosPlus 1.0 1986 System 3.0 VSE/SP 2.1 VMS 4.2 1985 6/1985 1985 DosPlus 1.2 7/1986 Windows 1.0 20/11/1985 MS DOS 3.2 12/1985 1986 PC DOS 3.20 System 4.0 1986 1/1986 1/1986 NetWare 2.0 1986 PC DOS 3.30 DosPlus 2.0 5/1986 Windows 1.03 1986 1986 System 5.0 1986 ProDOS 8 1.2 ProDOS 16 1.0 9/1986 9/1986 ProDOS 16 1.1 1987 CDOS 5.1 ProDOS 8 1.3 12/1986 1987 1/1987 1/1987 System 5.? VM/SP 1.5 OS/2 1.0 NetWare 2.11 3/1987 4/1987 ProDOS 8 1.4 GS/OS 2.0 Arthur 4/1987 (CP/DOS) CDOS 5.2 5/1987 5/1987 1987 2/4/1987 5/1987 VSE/SP 3.1 6/1987 DosPlus 2.1 MS DOS 3.3 Mid 1987 8/1987 Arthur 1.2 VM/SP HPO 1.5 1987? 10/1987 MS DOS 3.31 Dr CDOS/XM 6.0 11/1987 Dr CDOS/386 2.0 Windows/386 2.0 Windows 2.0 11/1987 GS/OS 3.1 1988 9/12/1987 9/12/1987 GEM/3 12/1987 1988 1/1988 Compaq Tops-20 7.0 DOS 3.31 MVS/ESA 6/1988 1988 VMS 5.0 4/1988 DrDos 3.3 Windows/386 2.1 Windows 2.1 5/1988 ProDOS 8 1.6 28/6/1988 28/6/1988 Dr CDOS/XM 6.2 Tops-10 7.04 6/1988 GS/OS 3.2 XDOS Dr CDOS/386 3.0 7/1988 7/1987 1988 PC DOS 4.0 7/1988 ProDOS 8 1.7 8/1988 8/1988 GS/OS 4.0 OS/2 1.1 SE 9/1988 VM/SP 1.6 31/10/1988 System 6.0 11/1988 11/1988 MS DOS 4.01 DrDos 4.41 12/1988 1989 12/1988 1989 VM/IS 1.6 VMS 5.1 4/1989 1989 OS/2 1.1 EE GEM/4 RiscOS 2 1989 (Arthur 2) VM/SP HPO1.6 ProDOS 8 1.8 EPOC NetWare 3.0 5/1989 VSE/SP 4.1 6/1989 VMS 5.2 6/1989 GS/OS 5.0 1989 7/1989 1989 1989 7/1989 OS/2 1.2 VMS 5.3 10/1989 1989 VM/XA SP 1.2.1 GS/OS 5.0.2 1990 12/1989 12/1989 1990 ViewMAX/1 Windows 3.0 DrDos 5.0 22/5/1990 5/1990 ProDOS 8 1.9 8/1990 VM/ESA 1.1 VMS 5.4 10/1990 10/1990 Dr Multiuser DOS 5.00 VSE/ESA 1.1 GS/OS 5.0.3 1991 12/1990 12/1990 1991 GS/OS 5.0.4 Dr Multiuser DOS 5.01 2/1991 ViewMAX/2 MS DOS 5.0 DrDos 6.0 6/1991 6/1991 RiscOS 3 NSS-DOS 1991 1991 VSE/ESA 1.2 9/1991 Windows 3.0 + Multimedia Ext System 7.0 VMS 5.5 20/10/1991 OS/2 1.3 TOS 1.06 11/1991 1991 Late 1991 VM/ESA 1.1.1 (GEMDOS 0.19) 1991 1992 12/1991 OS-9/6809 1992 Concurrent DOS 5.1 GS/OS 6.0 OS/2 2.0 Novell Netware Lite Dr Multiuser DOS 5.1 NetWare 4.0 Windows 3.1 3/1992 1992 3/1992 4/1992 System 7.0.1 6/4/1992 CCI Multiuser DOS 7.0 IMS Multiuser DOS 5.1 OS-9/68k 2.4 Dr PalmDOS "Merlin" Beta 1, 2 & 3 Enhanced Release System 7.1 6/1992 ViewMAX/3 Beta NitOS 9 MS DOS 5.0a GS/OS 6.0.1 1992 7/1992 PC DOS 5.02 Win-OS/2 Dr PalmDOS Eval Rel, RC 1 & 2 CCI Multiuser DOS 7.1 NetWare 4.01 8/1992 1992 8/1992 1992 Windows For CD-i workgroups 3.1 DrDOS "Panther" Beta 1 OS-9/68k 2.5 OpenVMS AXP 1.0 27/10/1992 DrDos 6.0 update Dr PalmDOS/Netware PalmDOS 1.0 10/1992 11/1992 CCI Multiuser DOS 7.21 VM/ESA 1.2.0 MVS/ESA R2 11/1992 6/1992 - 11/1992 System 7.1.2 1993 12/1992 12/1992 System 7.1 386 1993 System 7.2 Novell Personal Netware 1.0 VSE/ESA 1.3 System 7.5 OpenVMS AXP 1.5 CCI Multiuser DOS 7.22 OS-9/68k 3.0 OS-9/68k 2.9 3/1993 MS DOS 6.0 1993 30/3/1993 System 7.5.1 DOS/NT OS-9000 DR/IMS Multiuser DOS 5.11 OpenVMS 6.0 OS/2 2.1 DrDOS "StarTrek" (STDOS) 5/1993 7/1992 - 5/1993 VM/ESA 1.2.1 6/1993 Windows NT 3.1 PC DOS 6.0 7/1993 27/7/1993 Windows 3.11 1993 OS-9000/80x86 ? Windows For workgroups 3.11 MS DOS 6.2 David 8/11/1993 11/1993 VM/ESA 1.1.5 Novell Dos 7.0 System 7.5.3 1994 12/1993 12/1993 NetWare 4.10 1994 MS DOS 6.21 David 1.1 1994 dosemu DOS-C 2/3/1994 MS DOS 6.22 DR/IMS Multiuser DOS 5.14 11/3/1994 System 7.5.5 OpenVMS 6.1 PD-DOS 5/1994 6/1994 VM/ESA 1.2.2 PC DOS 6.3 RiscOS 3.5 Free-DOS 7/1994 1994 1994 7/1994 Windows NT 3.5 21/9/1994 1995 1995 PC DOS 7.0 28/2/1995 VSE/ESA 2.1 4/1995 Windows NT 3.51 30/5/1995 PC DOS 8.0 VSE/ESA 1.4 OpenVMS 6.2 6/1995 MVS/ESA SP5R2 6/1995 1995 Windows 95 MS DOS 7.0 24/8/1995 24/8/1995 Citrix WinFrame 9/1995 IMS Multiuser DOS 7.0 FreeDOS VM/ESA v2 R1 Windows 95 SP1 11/1995 OpenVMS 7.0 1996 OS/390 v1R1 12/1995 31/12/1995 1996 1/1996 Windows 95A OSR1 OS/2 Warp 3 2/1996 1996 IMS Multiuser DOS 7.1 RiscOS 3.7 1996 OS/390 v1R2 Windows NT 4.0 EPOC32 1996 7/1996 Windows 95B OSR2 1996 8/1996 MS DOS 7.10 OS/2 Warp 4.0 8/1996 9/1996 OS/390 v1R3 11/1996 Windows CE 1.0 VSE/ESA 2.2 OpenVMS 7.1 11/1996 1997 12/1996 12/1996 1997 Caldera OpenDOS 7.01 NetWare 5.0 Mac OS 7.6 2/1997 1997 1997 Windows 95B OSR2.1 Windows CE 1.1 4/1997 Mac OS 8.0 1997 Windows NT 4.0 OS/2 Warp 4.5 IMS REAL/32 7.5 BeOS PR1 1997 OS/390 v2R4 Service Pack 3 Mac OS 8.1 7/1997 7/1997 1997 BeOS PR2 Windows CE 2.0 Windows 95C OSR2.5 IMS REAL/32 7.51 10/1997 Windows NT 4.0 11/1997 11/1997 1997 VSE/ESA 2.3 VM/ESA v2 R3 Option Pack SkyOS 0.1 1998 12/1997 12/97 OS/390 v2R5 12/1997 12/1997 1998 1/1998 IMS REAL/32 7.52 Caldera DrDOS 7.02 Mac OS 8.5 BeOS R3 OS/400 v3R1 3/1998 3/1998 Mac OS 8.6 Palm OS 3.0 VSE/ESA 2.3.1 OS/390 v2R6 VMS 7.2 IMS REAL/32 7.53 1998 BeOS Max v3 Windows NT 7/1998 1998 Windows CE 2.1 Caldera DrDOS 7.02A Terminal Server Edition 6/1998 Windows 98 6/1998 BeOS R3.1 6/1998 7/1998 mid 1998 VSE/ESA 2.3.2 Windows NT 4.0 Windows CE 2.12 Service Pack 4 9/1998 Windows CE 3.0 OS/400 v3R2 BeOS R4 1999 OS/390 v2R7 IMS REAL/32 7.6 12/1998 1999 1/1999 Palm OS 3.1 Windows NT 1999 Embedded 4.0 BeOS R4.5 (Beta 1) 1999 22/2/1999 Caldera Thin Clients DrDOS 7.03 6/1999 RiscOS 4 EPOC 5 VSE/ESA 2.4 VM/ESA v2 R4 OS/390 v2R8 OS/400 v4R1 Lineo DrDos 7.03 6/1999 6/1999 BeOS R4.5.1 6/1999 6/1999 6/1999 6/1999 Lineo OEM DrDos 7.04 7/1999 8/1999 Windows 98SE 8/1999 Mac OS 9.0 VSE/ESA 2.4.1 Palm OS 3.2 Lineo DrDos 7.05 10/1999 1999? 1999 11/1999 OS/390 v2R9 12/1999 2000 OS/400 v4R2 2000 VMS 7.3 TPF v3R1 ws 2000 RiscOS 5 2000 Windo BeOS R5 Free BeOS R5 Pro VSE/ESA 2.4.2 (NT 5) 3/2000 3/2000 2/2000 OS/400 v4R3 Mac OS 9.1 2000 VSE/ESA 2.5 Windows ME Symbian 6 9/2000 OS/390 v2R10 9/2000 10/2000 11/2000? z/VM v3 R1 2001 12/2000 2001 z/OS v1R1 1/2001 VSE/ESA 2.5.1 OS/400 v4R4 Symbian 6.1 FreeDOS Beta 6 2001? 3/2001 3/2001 z/VM v4 R1 5/2001 z/OS v1R2 Palm OS 3.3 TPF v4R1 6/2001 2001? 7/2002 VSE/ESA 2.5.2 z/VM v4 R2 FreeDOS Beta 7 8/2001 8/2001 OpenBeOS Windows XP eComStation OS/2 v1.0 9/2001 (NT 5.1) 4/10/2001 10/2001 VSE/ESA 2.6 Windows XP OS/400 v4R5 Windows CE .NET 2002 12/2001 Embedded 2002 7/1/2002 Symbian 7.0 VSE/ESA 2.6.1 2001 2/2002 2002? OS/400 v5R1 FreeDOS Beta 8 VSE/ESA 2.6.2 z/OS v1R3 Windows XP Tablet Ed 4/2002 2002? Copyright 2003,2004 6/2002 2002 Patrick J.C.