Timeline of operating systems

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This article presents a timeline of events in the history of computer operating systems from 1951 to the current day. For a narrative explaining the overall developments, see the History of operating systems.

## 1950s

[edit]

* 1951
* LEO I 'Lyons Electronic Office'[1] was the commercial development of EDSAC computing platform, supported by British firm J. Lyons and Co.
* 1953
* DYSEAC \- an early machine capable of distributing computing
* 1955
* General Motors Operating System made for IBM 701[2]
* MIT's Tape Director operating system made for UNIVAC 1103[3][4]
* 1956
* GM-NAA I/O for IBM 704, based on General Motors Operating System
* 1957
* Atlas Supervisor (Manchester University) (Atlas computer project start)
* BESYS (Bell Labs), for IBM 704, later IBM 7090 and IBM 7094
* 1958
* University of Michigan Executive System (UMES), for IBM 704, 709, and 7090
* 1959
* SHARE Operating System (SOS), based on GM-NAA I/O

## 1960s

[edit]

* 1960
* IBSYS (IBM for its 7090 and 7094)
* 1961
* CTSS demonstration (MIT's Compatible Time-Sharing System for the IBM 7094)
* MCP (Burroughs Master Control Program) for B5000
* 1962
* Atlas Supervisor (Manchester University) (Atlas computer commissioned)
* BBN Time-Sharing System
* GCOS (GE's General Comprehensive Operating System, originally GECOS, General Electric Comprehensive Operating Supervisor)
* 1963
* ADMIRAL[5]
* AN/FSQ-32, another early time-sharing system begun
* CTSS becomes operational (MIT's Compatible Time-Sharing System for the IBM 7094)
* JOSS, an interactive time-shared system that did not distinguish between operating system and language
* Titan Supervisor, early time-sharing system begun
* 1964
* Berkeley Timesharing System (for Scientific Data Systems' SDS 940)
* Chippewa Operating System (for CDC 6600 supercomputer)
* Dartmouth Time-Sharing System (Dartmouth College's DTSS for GE computers)
* EXEC 8 (UNIVAC)
* KDF9 Timesharing Director (English Electric) – an early, fully hardware secured, fully pre-emptive process switching, multi-programming operating system for KDF9 (originally announced in 1960)
* OS/360 (IBM's primary OS for its S/360 series) (announced)
* PDP-6 Monitor (DEC) descendant renamed TOPS-10 in 1970
* SCOPE (CDC 3000 series)
* 1965
* BOS/360 (IBM's Basic Operating System)
* DECsys
* TOS/360 (IBM's Tape Operating System)
* Livermore Time Sharing System (LTSS)
* Multics (MIT, GE, Bell Labs for the GE-645) (announced)
* Pick operating system
* SIPROS 66 (Simultaneous Processing Operating System)[6]
* THE multiprogramming system (Technische Hogeschool Eindhoven) development
* TSOS (later VMOS) (RCA)
* 1966
* DOS/360 (IBM's Disk Operating System)
* GEORGE 1 & 2 for ICT 1900 series
* Mod 1[7]
* Mod 2[8]
* Mod 8[9]
* MS/8 (Richard F. Lary's DEC PDP-8 system)
* MSOS (Mass Storage Operating System)[10]
* OS/360 (IBM's primary OS for its S/360 series) PCP and MFT (shipped)
* RAX
* Remote Users of Shared Hardware (RUSH), a time-sharing system developed by Allen-Babcock for the IBM 360/50
* SODA for Elwro's Odra 1204
* Universal Time-Sharing System (XDS Sigma series)
* 1967
* CP-40, predecessor to CP-67 on modified IBM System/360 Model 40
* CP-67 (IBM, also known as CP/CMS)
* Conversational Programming System (CPS), an IBM time-sharing system under OS/360
* Michigan Terminal System (MTS)[11] (time-sharing system for the IBM S/360-67 and successors)
* ITS (MIT's Incompatible Timesharing System for the DEC PDP-6 and PDP-10)
* OS/360 MVT
* ORVYL (Stanford University's time-sharing system for the IBM S/360-67)
* TSS/360 (IBM's Time-sharing System for the S/360-67, never officially released, canceled in 1969 and again in 1971)
* WAITS (SAIL, Stanford Artificial Intelligence Laboratory, time-sharing system for DEC PDP-6 and PDP-10, later TOPS-10)
* 1968
* Airline Control Program (ACP) (IBM)
* B1 (NCR Century series)[12]
* CALL/360, an IBM time-sharing system for System/360
* Real-Time Executive (RTE) – Hewlett-Packard[13]
* THE multiprogramming system (Eindhoven University of Technology) publication
* TSS/8 (DEC for the PDP-8)
* VP/CSS
* 1969
* B2 (NCR Century series)[14]
* B3 (NCR Century series)[14]
* GEORGE 3 For ICL 1900 series
* Multics (MIT, GE, Bell Labs for the GE-645 and later the Honeywell 6180) (opened for paying customers in October[15])
* RC 4000 Multiprogramming System (RC)
* TENEX (Bolt, Beranek and Newman for DEC systems, later TOPS-20)
* Unics (later Unix) (AT&T, initially on DEC computers)
* Xerox Operating System

## 1970s

[edit]

* 1970
* DOS-11 (PDP-11)
* 1971
* EMAS
* Kronos
* RSTS-11 2A-19 (First released version; PDP-11)
* RSX-15
* OS/8
* 1972
* B4 (NCR Century series)[14]
* COS-300
* Data General RDOS
* Edos
* MUSIC/SP
* OS/4
* OS 1100
* Operating System/Virtual Storage 1 (OS/VS1)
* Operating System/Virtual Storage 2 R1 (OS/VS2 SVS)
* PRIMOS (written in FORTRAN IV, that didn't have pointers, while later versions, around version 18, written in a version of PL/I, called PL/P)
* Virtual Machine/Basic System Extensions Program Product (BSEPP or VM/SE)
* Virtual Machine/System Extensions Program Product (SEPP or VM/BSE)
* Virtual Machine Facility/370 (VM/370), sometimes known as VM/CMS
* 1973
* Эльбрус-1 (Elbrus-1) – Soviet computer – created using high-level language uЭль-76 (AL-76/ALGOL 68)
* Alto OS
* CP-V (Control Program V)
* RSX-11D
* RT-11
* VME – implementation language S3 (ALGOL 68)
* 1974
* ACOS-2 (NEC)
* ACOS-4
* ACOS-6
* CP/M[16]
* DOS-11 V09-20C (Last stable release, June 1974)
* Hydra[17] – capability-based, multiprocessing OS kernel
* MONECS
* Multi-Programming Executive (MPE) – Hewlett-Packard
* Operating System/Virtual Storage 2 R2 (MVS)
* OS/7
* OS/16
* OS/32
* Sintran III
* 1975
* BS2000 V2.0 (First released version)
* COS-350[18]
* ISIS
* NOS (Control Data Corporation)
* OS/3 (Univac)
* VS/9 (formerly RCA's TSOS, later named VMOS)
* Version 6 Unix
* XVM/DOS
* XVM/RSX
* 1976
* Cambridge CAP computer[19] – all operating system procedures written in ALGOL 68C, with some closely associated protected procedures in BCPL
* Cray Operating System
* DX10
* FLEX[20]
* TOPS-20
* TX990/TXDS
* Tandem Nonstop OS v1
* Thoth
* 1977
* 1BSD
* AMOS
* KERNAL
* OASIS operating system
* OS68
* OS4000
* RMX-80
* System 88 (Exec)
* System Support Program (IBM System/34 and System/36)
* TRSDOS
* Virtual Memory System (VMS) V1.0 (Initial commercial release, October 25)
* VRX (Virtual Resource eXecutive)
* VS Virtual Memory Operating System[21]
* 1978
* 2BSD
* Apple DOS
* Control Program Facility (IBM System/38)
* Cray Time Sharing System (CTSS)
* DPCX (IBM)
* DPPX (IBM)
* HDOS
* KSOS[22] – secure OS design from Ford Aerospace
* KVM/370[23] – security retro-fit of IBM VM/370
* Lisp machine (CADR)
* MVS/System Extensions (MVS/SE)
* OS4 (Naked Mini 4)
* PTDOS[24]
* TRIPOS
* UCSD p-System (First released version)
* 1979
* Atari DOS
* 3BSD
* CP-6
* Idris
* MP/M
* MVS/System Extensions R2 (MVS/SE2)
* NLTSS
* POS
* Sinclair BASIC
* Transaction Processing Facility (TPF) (IBM)
* UCLA Secure UNIX[25] – an early secure UNIX OS based on security kernel
* UNIX/32V
* DOS/VSE
* Version 7 Unix

## 1980s

[edit]

* 1980
* 86-DOS
* AOS/VS (Data General)
* Business Operating System
* CTOS[26]
* MVS/System Product (MVS/SP) V1
* NewDos/80
* OS-9
* RMX-86
* RS-DOS
* SOS
* Virtual Machine/System Product (VM/SP)
* Xenix
* 1981
* Acorn MOS
* Aegis SR1 (First Apollo/DOMAIN systems shipped on March 27[27])
* CP/M-86
* iMAX – OS for Intel's iAPX 432 capability machine
* MCS (Multi-user Control System)
* MS-DOS
* PC DOS
* Pilot (Xerox Star operating system)
* UNOS
* UTS
* V
* VERSAdos[28]
* VRTX
* VSOS (Virtual Storage Operating System)[29]
* Xinu first release
* 1982
* Commodore DOS
* LDOS (By Logical Systems, Inc. – for the Radio Shack TRS-80 Models I, II & III)
* PCOS (Olivetti M20)
* pSOS
* QNX
* Stratus VOS[30]
* Sun UNIX (later SunOS) 0.7
* Ultrix
* Unix System III
* VAXELN
* 1983
* Coherent
* DNIX
* EOS
* GNU (project start)
* Lisa Office System 7/7
* LOCUS[31] – UNIX compatible, high reliability, distributed OS
* MVS/System Product V2 (MVS/Extended Architecture, MVS/XA)
* Novell NetWare (S-Net)
* PERPOS
* ProDOS
* RTU (Real-Time Unix)
* STOP[32] – TCSEC A1-class, secure OS for SCOMP hardware
* SunOS 1.0
* VSE/System Package (VSE/SP) Version 1[33]
* 1984
* AMSDOS
* CTIX (Unix variant)
* DYNIX
* Mac OS (System 1.0)
* MSX-DOS
* NOS/VE[34][35]
* PANOS
* PC/IX
* ROS
* Sinclair QDOS
* SINIX
* UNICOS
* Venix 2.0
* Virtual Machine/Extended Architecture Migration Assistance (VM/XA MA)
* 1985
* AmigaOS
* Atari TOS
* DG/UX
* DOS Plus
* Graphics Environment Manager
* Harmony
* MIPS RISC/os
* Oberon – written in Oberon
* SunOS 2.0
* Version 8 Unix
* Virtual Machine/Extended Architecture System Facility (VM/XA SF)
* Windows 1.0
* Windows 1.01
* Xenix 2.0
* 1986
* AIX 1.0
* Cronus distributed OS[36]
* FlexOS
* GEMSOS[37] – TCSEC A1-class, secure kernel for BLACKER VPN & GTNP
* GEOS
* Genera 7.0
* HP-UX
* SunOS 3.0
* TR-DOS
* TRIX
* Version 9 Unix
* 1987
* Arthur (much improved version came in 1989 under the name RISC OS)
* BS2000 V9.0
* IRIX (3.0 is first SGI version)
* MDOS
* MINIX 1.0
* OS/2 (1.0)
* PC-MOS/386
* Topaz[38] – semi-distributed OS for DEC Firefly workstation written in Modula-2+ and garbage collected
* Windows 2.0
* 1988
* A/UX (Apple Computer)
* AOS/VS II (Data General)
* CP/M rebranded as DR-DOS
* Flex machine – tagged, capability machine with OS and other software written in ALGOL 68RS
* GS/OS
* HeliOS 1.0
* KeyKOS – capability-based microkernel for IBM mainframes with automated persistence of app data
* LynxOS
* Mac OS (System 6)
* MVS/System Product V3 (MVS/Enterprise Systems Architecture, MVS/ESA)
* OS/2 (1.1)
* OS/400
* RISC iX
* SpartaDOS X
* SunOS 4.0
* TOPS-10 7.04 (Last stable release, July 1988)
* Virtual Machine/Extended Architecture System Product (VM/XA SP)
* VAX VMM[39] – TCSEC A1-class, VMM for VAX computers (limited use before cancellation)
* 1989
* Army Secure Operating System (ASOS)[40] – TCSEC A1-class secure, real-time OS for Ada applications
* EPOC (EPOC16)
* NeXTSTEP (1.0)
* OS/2 (1.2)
* RISC OS (First release was to be called Arthur 2, but was renamed to RISC OS 2, and was first sold as RISC OS 2.00 in April 1989)
* SCO UNIX (Release 3)
* TSX-32
* Version 10 Unix
* Xenix 2.3.4 (Last stable release)

## 1990s

[edit]

* 1990
* AIX 3.0
* AmigaOS 2.0
* BeOS (v1)
* DOS/V
* Genera 8.0
* iS-DOS
* LOCK[41] – TCSEC A1-class secure system with kernel and hardware support for type enforcement
* MVS/ESA SP Version 4
* Novell NetWare 3
* OS/2 1.3
* OSF/1
* RTEMS
* PC/GEOS
* Windows 3.0
* Virtual Machine/Enterprise Systems Architecture (VM/XA ESA)
* VSE/Enterprise Systems Architecture (VSE/ESA) Version 1[42]
* 1991
* Amoeba – microkernel-based, POSIX-compliant, distributed OS
* GNO/ME
* Linux 0.01-0.1
* Mac OS (System 7)
* MINIX 1.5
* PenPoint OS
* RISC OS 3[43]
* SUNMOS
* Trusted Xenix[44] – rewritten & security enhanced Xenix evaluated at TCSEC B2-class
* 1992
* 386BSD 0.1
* Amiga Unix 2.01 (Latest stable release)
* AmigaOS 3.0
* BSD/386, by BSDi and later known as BSD/OS.
* LGX
* OpenVMS V1.0 (First OpenVMS AXP (Alpha) specific version, November 1992)
* OS/2 2.0 (First i386 32-bit based version)
* Plan 9 First Edition (First public release was made available to universities)
* RSTS/E 10.1 (Last stable release, September 1992)
* SLS
* Solaris 2.0 (Successor to SunOS 4.x; based on SVR4 instead of BSD)
* Windows 3.1
* 1993
* IBM 4690 Operating System
* FreeBSD
* NetBSD
* Novell NetWare 4
* Newton OS
* Nucleus RTOS
* Open Genera 1.0
* OS 2200 (Unisys)
* OS/2 2.1
* PTS-DOS
* Slackware 1.0
* Spring
* Windows NT 3.1 (First Windows NT kernel public release)
* 1994
* AIX 4.0, 4.1
* IBM MVS/ESA SP Version 5
* NetBSD 1.0 (First multi-platform release, October 1994)
* OS/2 Warp 3.0
* Red Hat
* RISC OS 3.5
* SPIN – extensible OS written in Modula-3
* 1995
* Digital UNIX (aka Tru64 UNIX)
* OpenBSD
* OS/390
* Plan 9 Second Edition (Commercial second release version was made available to the general public.)
* SMSQ/E
* Ultrix 4.5 (Last major release)
* Windows 95
* 1996
* AIX 4.2
* Debian 1.1
* JN[45] – microkernel OS for embedded, Java apps
* Mac OS 7.6 (First officially-named Mac OS)
* OS/2 Warp 4.0
* Palm OS
* RISC OS 3.6
* Windows NT 4.0
* Windows CE 1.0
* 1997
* AIX 4.3
* DR-WebSpyder 1.0
* EPOC (EPOC32)
* Inferno
* Mac OS 8
* MINIX 2.0
* Nemesis[46]
* RISC OS 3.7
* SkyOS
* Windows CE 2.0
* 1998
* DR-WebSpyder 2.0
* Junos
* Novell NetWare 5
* RT-11 5.7 (Last stable release, October 1998)
* Solaris 7 (first 64-bit Solaris release – names from this point drop "2.", otherwise would've been Solaris 2.7)
* Windows 98
* 1999
* Amiga OS 3.5 (unofficial)
* AROS (Boot for the first time in Stand Alone version)
* Inferno Second Edition (Last distribution (Release 2.3, c. July 1999) from Lucent's Inferno Business Unit)[47]
* Mac OS 9
* OS/2 Warp 4.5
* RISC OS 4
* Windows 98 (2nd edition)

## 2000s

[edit]

Year–month | Windows | Apple | BSD | Linux | Others

|
|
|
|
|

2000–01 |  |  |  |  |
2000–02 | Windows 2000[48] |  |  |  | Solaris 8
2000–03 |  |  | FreeBSD 4.0 | Red Hat Linux 6.2E | AtheOS
BeOS R5
2000–04 | Pocket PC 2000 |  |  |  |
2000–05 |  |  |  |  | MenuetOS
2000–06 | Windows CE 3.0 |  | OpenBSD 2.7 |  | Plan 9 Third Edition[49]
2000–07 | Windows 2000 Service Pack 1 |  |  |  | OS/400 V4R5
2000–08 |  |  |  | Debian 2.2 | MorphOS 0.1[50]
2000–09 | Windows Millennium Edition[51] | Mac OS X Public Beta |  | SUSE Linux 7.0 |
2000–10 |  |  |  |  | z/OS
z/VM
MorphOS 0.2
2000–11 |  |  |  |  |
2000–12 |  |  | NetBSD 1.5
OpenBSD 2.8 |  | AmigaOS 3.9[52]
HP-UX 11i
2001–01 |  | Mac OS 9.1 |  |  |
2001–02 |  |  |  |  | MorphOS 0.4[53]
2001–03 |  | Mac OS X Cheetah (v10.0) |  |  |
2001–04 |  |  |  |  |
2001–05 | Windows 2000 Service Pack 2 |  |  |  | AIX 5L 5.1
OS/400 V5R1
2001–06 |  |  | OpenBSD 2.9 |  |
2001–07 |  | Mac OS 9.2 |  |  | eComStation 1.0
2001–08 |  |  |  |  | Haiku[54]
2001–09 |  | Mac OS X Puma (v10.1) |  |  |
2001–10 | Pocket PC 2002
Windows XP[55]
Windows XP 64-bit Edition 2002[56] |  |  |  | Novell NetWare 6.0
2001–11 |  |  |  |  |
2001–12 |  |  | OpenBSD 3.0 |  | OS/2 4.52
2002–01 | Windows CE 4.x |  |  |  | JX microkernel for Java
Sanos microkernel[57] for net appliances
K42 microkernel for NUMA machines
2002–02 |  |  |  |  |
2002–03 |  |  |  | Red Hat Enterprise Linux 2.1 AS |
2002–04 |  |  |  | SUSE Linux 8.0 | Plan 9 Fourth Edition[58]
2002–05 |  |  | OpenBSD 3.1 |  | Solaris 9 (SPARC)
2002–06 |  |  |  |  |
2002–07 |  |  |  | Debian 3.0 | Syllable 0.4.0[59]
2002–08 | Windows 2000 Service Pack 3 | Mac OS X Jaguar[60] (v10.2) |  |  | OS/400 V5R2
2002–09 | Windows XP Service Pack 1 |  | NetBSD 1.6 |  | OS2000
2002–10 |  |  |  |  | AIX 5.2
2002–11 |  |  | OpenBSD 3.2 |  | MorphOS 1.0
2002–12 |  |  |  |  | MorphOS 1.1
2003–01 |  |  | FreeBSD 5.0 |  | Solaris 9 (x86)
JNode[61] – JavaOS successor
2003–02 |  |  |  |  | MorphOS 1.2
ReactOS 0.1.0
2003–03 | Windows XP 64-bit Edition 2003[62] |  |  |  | MorphOS 1.3
2003–04 | Windows Server 2003 |  |  |  | eComStation 1.1
2003–05 |  |  | OpenBSD 3.3 | Red Hat Enterprise Linux 2.1 ES |
2003–06 | Windows 2000 Service Pack 4
Windows Mobile 2003 |  |  |  | OpenVMS 8.0
2003–07 |  |  |  |  |
2003–08 |  |  |  |  | Novell NetWare 6.5
MorphOS 1.4
2003–09 |  |  |  |  | HP-UX 11i v2
2003–10 |  | Mac OS X Panther (v10.3) |  | Red Hat Enterprise Linux 3
SUSE Linux 9.0 |
2003–11 |  |  | OpenBSD 3.4 | Fedora Core 1 |
2003–12 |  |  |  | Linux 2.6.0[63] | XTS-400
2004–01 |  |  |  | Linux 2.6.1 | ReactOS 0.2.0
2004–02 |  |  |  | Linux 2.6.2, 2.6.3 |
2004–03 |  |  |  | Linux 2.6.4 | ReactOS 0.2.1
2004–04 |  |  |  | Linux 2.6.5 | ReactOS 0.2.2
2004–05 |  |  | OpenBSD 3.5 | Linux 2.6.6
Fedora Core 2 |
2004–06 |  |  |  |  | i5/OS V5R3
ReactOS 0.2.3
2004–07 |  |  | DragonFly BSD 1.0 |  |
2004–08 | Windows CE 5.x
Windows XP Service Pack 2 |  |  | Linux 2.6.8 | AIX 5.3
eComStation 1.2
2004–09 |  |  |  |  | ReactOS 0.2.4
2004–10 |  |  |  | Linux 2.6.9
Ubuntu 4.10 |
2004–11 |  |  | OpenBSD 3.6 | Fedora Core 3 |
2004–12 |  |  | NetBSD 2.0 | Linux 2.6.10 |
2005–01 |  |  |  |  | Solaris 10
ReactOS 0.2.5
2005–02 |  |  |  | Red Hat Enterprise Linux 4 | OpenVMS 8.2
z/VSE
2005–03 | Windows Server 2003 Service Pack 1
Windows XP Professional x64 Edition |  |  | Linux 2.6.11
Novell Open Enterprise Server | MorphOS 1.4.4
2005–04 |  | Mac OS X Tiger (v10.4) | DragonFly BSD 1.2 | Ubuntu 5.04 | ReactOS 0.2.6
MorphOS 1.4.5
2005–05 | Windows Mobile 5.0 |  | OpenBSD 3.7 |  |
2005–06 |  |  |  | Linux 2.6.12
Fedora Core 4
Debian 3.1 |
2005–07 |  |  |  |  |
2005–08 |  |  |  | Linux 2.6.13 | ReactOS 0.2.7
MorphOS 1.4.5 Classic
2005–09 |  |  |  |  |
2005–10 |  |  |  | Linux 2.6.14
Ubuntu 5.10
SUSE Linux 10.0 | ReactOS 0.2.8
2005–11 |  |  | FreeBSD 6.0
OpenBSD 3.8 |  |
2005–12 |  |  | NetBSD 3.0 |  | ReactOS 0.2.9
2006–01 |  |  | DragonFly BSD 1.4 | Linux 2.6.15 | i5/OS V5R4
Solaris 10 1/06
2006–02 |  |  |  |  |
2006–03 | Windows Server 2003 R2 |  |  | Linux 2.6.16
Fedora Core 5 |
2006–04 |  |  |  |  |
2006–05 |  |  | OpenBSD 3.9 |  | SymbOS
MINIX 3.1.2
2006–06 |  |  |  | Linux 2.6.17
Ubuntu 6.06 (LTS) | Solaris 10 6/06
2006–07 |  |  | DragonFly BSD 1.6 |  |
2006–08 |  |  |  |  | BS2000/OSD v7.0[64]
ReactOS 0.3.0
2006–09 | Windows CE 6.0 |  |  | Linux 2.6.18 | FreeDOS 1.0
OpenVMS 8.3
2006–10 |  |  |  | Fedora Core 6
Ubuntu 6.10
Slackware 11.0 |
2006–11 |  |  | OpenBSD 4.0 | Linux 2.6.19 | AmigaOS 4.0
Solaris 10 11/06
2006–12 |  |  |  |  |
2007–01 | Windows Vista |  | DragonFly BSD 1.8 | Bharat Operating System Solutions |
2007–02 | Windows Mobile 6.0 |  |  | Linux 2.6.20 | Inferno Fourth Edition
2007–03 | Windows Server 2003 Service Pack 2 |  |  | Red Hat Enterprise Linux 5 | ReactOS 0.3.1
2007–04 |  |  |  | Linux 2.6.21
Ubuntu 7.04
Debian 4.0 |
2007–05 |  | iPhone OS 1 | OpenBSD 4.1 | Fedora Linux 7 |
2007–06 |  |  |  |  |
2007–07 |  |  |  | Linux 2.6.22
Slackware 12.0 |
2007–08 |  |  | DragonFly BSD 1.10 |  | Solaris 10 8/07
2007–09 |  | iPhone OS 1.1 |  |  | HP-UX 11i v3
ReactOS 0.3.3
2007–10 |  | Mac OS X Leopard (v10.5) |  | Linux 2.6.23
Ubuntu 7.10 | OpenVMS 8.3-1H1
2007–11 | Windows Home Server |  | OpenBSD 4.2 | Fedora Linux 8
gOS | AIX 6.1,
2007–12 |  |  | NetBSD 4.0 |  |
2008–01 |  |  |  | Linux 2.6.24 | ReactOS 0.3.4
2008–02 | Windows Vista Service Pack 1
Windows Server 2008 |  | DragonFly BSD 1.12
FreeBSD 7.0 |  |
2008–03 |  |  |  |  | IBM i 6.1
Singularity 1.1
2008–04 | Windows Mobile 6.1
Windows XP Service Pack 3 |  |  | Linux 2.6.25
Ubuntu 8.04 (LTS) |
2008–05 |  |  | OpenBSD 4.3 | Fedora Linux 9
Slackware 12.1 | Solaris 10 5/08
OpenSolaris 2008.05
BS2000/OSD v8.0A
2008–06 |  |  |  | SUSE Linux 11.0 | MorphOS 2.0
ReactOS 0.3.5
2008–07 |  | iPhone OS 2 | DragonFly BSD 2.0 | Linux 2.6.26 |
2008–08 |  |  |  |  | STOP 6.5
ReactOS 0.3.6
2008–09 |  | iPhone OS 2.1 |  |  | AmigaOS 4.1
z/OS V1R10
MorphOS 2.1
2008–10 |  |  |  | Linux 2.6.27
Ubuntu 8.10
Android 1.0 | Solaris 10 10/08
OKL4 3.0
2008–11 |  | iPhone OS 2.2 | OpenBSD 4.4 | Fedora Linux 10 | Singularity 2.0
ReactOS 0.3.7
Genode 8.11[65]
2008–12 |  |  |  | Linux 2.6.28
Slackware 12.2 | MorphOS 2.2
OpenSolaris 2008.11
2009–01 |  |  |  |  |
2009–02 |  |  | DragonFly BSD 2.2 | Debian 5.0
Android 1.1 | ReactOS 0.3.8
2009–03 |  |  |  | Linux 2.6.29 |
2009–04 |  |  | NetBSD 5.0 | Ubuntu 9.04
Android 1.5 | ReactOS 0.3.9
2009–05 | Windows Mobile 6.5
Windows Vista Service Pack 2 |  | OpenBSD 4.5 |  | Solaris 10 5/09
2009–06 |  | iPhone OS 3 |  | Linux 2.6.30
Fedora Linux 11
Palm webOS 1 | AmigaOS 4.1
OpenSolaris 2009.06
2009–07 |  |  |  |  | ReactOS 0.3.10
2009–08 |  | Mac OS X Snow Leopard (v10.6) |  | Slackware 13.0 | MorphOS 2.3
2009–09 |  | iPhone OS 3.1 | DragonFly BSD 2.4 | Linux 2.6.31
Android 1.6 |
2009–10 | Windows 7
Windows Server 2008 R2 |  | OpenBSD 4.6 | Ubuntu 9.10
Android 2.0 | Solaris 10 10/09
MorphOS 2.4
2009–11 |  |  | FreeBSD 8.0 | Fedora Linux 12
openSUSE 11.2 |
2009–12 |  |  |  | Linux 2.6.32 | ReactOS 0.3.11

## 2010s

[edit]

Year–month | Windows | Apple | BSD | Linux | Others

|
|
|
|
|

2010–01 |  |  |  | Android 2.1 | AmigaOS 4.1 Upd. 1
2010–02 |  |  |  | Linux 2.6.33 |
2010–03 |  |  |  |  |
2010–04 |  | iPhone OS 3.2 | DragonFly BSD 2.6 | Ubuntu 10.04 (LTS) | AmigaOS 4.1 Upd. 2
IBM i 7.1
2010–05 |  |  | OpenBSD 4.7 | Linux 2.6.34
Fedora Linux 13
Android 2.2 | eComStation 2.0
2010–06 |  | iOS 4 |  |  | MorphOS 2.5
OpenVMS 8.4
2010–07 |  |  |  | openSUSE 11.3 |
2010–08 |  |  |  | Linux 2.6.35 |
2010–09 |  | iOS 4.1 |  |  | Solaris 10 9/10
AIX 7.1
2010–10 | Windows Phone 7 |  | DragonFly BSD 2.8 | Linux 2.6.36
Fedora Linux 14
Ubuntu 10.10 | MorphOS 2.6
ReactOS 0.3.12
2010–11 |  | iOS 4.2 | NetBSD 5.1
OpenBSD 4.8 | Red Hat Enterprise Linux 6 |
2010–12 |  |  |  | Android 2.3 | MorphOS 2.7
2011–01 |  |  |  | Linux 2.6.37 |
2011–02 | Windows 7 Service Pack 1 |  |  | Debian 6.0
Android 3.0 |
2011–03 | Windows CE 7.0 | iOS 4.3 |  | Linux 2.6.38
openSUSE 11.4 | ReactOS 0.3.13
2011–04 | Windows Home Server 2011 |  | DragonFly BSD 2.10 | Ubuntu 11.04
Slackware 13.37 |
2011–05 |  |  | OpenBSD 4.9 | Linux 2.6.39
Fedora Linux 15
Android 3.1 | AmigaOS 4.1 Upd. 1 (for Classic)
eComStation 2.1
2011–06 |  | iOS 5 |  | ChromeOS (first shipped) | 9front
2011–07 |  | Mac OS X Lion (v10.7) |  | Linux 3.0
Android 3.2
HP webOS 3 | AmigaOS 4.1 Upd. 3
2011–08 |  |  |  |  |
2011–09 | Windows Phone 7.5 |  |  |  |
2011–10 |  |  |  | Linux 3.1
Ubuntu 11.10
Android 4.0 |
2011–11 |  |  | OpenBSD 5.0 | Fedora Linux 16
openSUSE 12.1 | Solaris 11 11/11
2011–12 |  |  |  |  | AmigaOS 4.1 Upd. 4
2012–01 |  |  | FreeBSD 9.0 | Linux 3.2 | FreeDOS 1.1
2012–02 |  |  | DragonFly BSD 3.0 |  | ReactOS 0.3.14
Minix 3.2
2012–03 |  | iOS 5.1 |  | Linux 3.3
Android 4.0.4 |
2012–04 |  |  |  | Ubuntu 12.04 (LTS) |
2012–05 |  |  | OpenBSD 5.1 | Linux 3.4
Fedora Linux 17 | DexOS
2012–06 |  |  |  |  | BS2000/OSD 9.0
MorphOS 3.0
2012–07 |  | OS X Mountain Lion (v10.8) |  | Linux 3.5
Android 4.1
openSUSE 12.2 | MorphOS 3.1
AmigaOS 4.1 Upd. 5
2012–08 |  |  |  |  |
2012–09 | Windows Server 2012 | iOS 6 |  | Linux 3.6
Slackware 14.0
Qubes OS |
2012–10 | Windows 8
Windows Phone 8 |  | NetBSD 6.0
OpenBSD 5.2 | Ubuntu 12.10 | Solaris 11.1
2012–11 |  |  | DragonFly BSD 3.2 | Android 4.2 | Haiku R1 Alpha 4
2012–12 |  |  | FreeBSD 9.1 |  |
2013–01 |  | iOS 6.1 |  | Fedora Linux 18 | BlackBerry 10
Solaris 10 1/13
2013–02 | Windows Phone 7.8 |  |  |  |
2013–03 |  |  |  | openSUSE 12.3 |
2013–04 |  |  | DragonFly BSD 3.4 | Linux 3.9
Ubuntu 13.04 |
2013–05 |  |  | NetBSD 6.1
OpenBSD 5.3 | Debian 7.0 | ReactOS 0.3.15
MorphOS 3.2
2013–06 | Windows CE 8.0 (2013) |  |  | Linux 3.10 |
2013–07 |  |  |  | Fedora Linux 19
Android 4.3 |
2013–08 |  |  |  |  |
2013–09 |  | iOS 7 | FreeBSD 9.2 | Linux 3.11 | MorphOS 3.3
z/OS Version 2.1
2013–10 | Windows 8.1
Windows Server 2012 R2 | OS X Mavericks (v10.9) |  | Ubuntu 13.10 |
2013–11 |  |  | DragonFly BSD 3.6
OpenBSD 5.4 | Slackware 14.1
openSUSE 13.1
Android 4.4
Linux 3.12 |
2013–12 |  |  |  | Fedora Linux 20 | MorphOS 3.4
Muen[66] separation kernel
2014–01 |  |  | FreeBSD 10.0 | Linux 3.13 |
2014–02 |  |  |  |  | ReactOS 0.3.16
MorphOS 3.5
2014–03 |  | iOS 7.1 |  | Linux 3.14 |
2014–04 | Windows Phone 8.1 |  |  | Ubuntu 14.04 (LTS) | Solaris 11.2
2014–05 |  |  | OpenBSD 5.5 |  |
2014–06 |  |  | DragonFly BSD 3.8 | Linux 3.15
Red Hat Enterprise Linux 7 | MorphOS 3.6
2014–07 |  |  |  |  |
2014–08 |  |  |  | Linux 3.16 | MorphOS 3.7
2014–09 |  | iOS 8 |  |  | Minix 3.3
2014–10 |  | OS X Yosemite (v10.10)
iOS 8.1 |  | Ubuntu 14.10
Linux 3.17 |
2014–11 |  |  | OpenBSD 5.6
FreeBSD 10.1
DragonFly BSD 4.0 | openSUSE 13.2
Android 5.0 | IBM i 7.2
ReactOS 0.3.17
2014–12 |  |  |  | Linux 3.18
Fedora Linux 21 |
2015–01 |  |  |  |  |
2015–02 |  |  |  | Linux 3.19 |
2015–03 |  | iOS 8.2 |  |  |
2015–04 |  | iOS 8.3
watchOS 1 |  | Linux 4.0
Debian 8.0
Ubuntu 15.04 | Redox OS
2015–05 |  |  |  | Fedora Linux 22 | BS2000/OSD 10.0
2015–06 |  | iOS 8.4 |  | Linux 4.1 | MorphOS 3.9
2015–07 | Windows 10 (1507) |  |  |  |
2015–08 |  |  | FreeBSD 10.2 | Linux 4.2 |
2015–09 |  | OS X El Capitan (v10.11)
iOS 9
watchOS 2 | NetBSD 7.0 |  | z/OS Version 2.2[67]
2015–10 |  | iOS 9.1
tvOS9 |  | Android 6.0
Ubuntu 15.10 | AIX 7.2[68]
Solaris 11.3[69]
2015–11 | Windows 10 November Update (1511)
Windows 10 Mobile (1511) | tvOS9.1 |  | Linux 4.3
Fedora Linux 23
openSUSE Leap 42.1 |
2015–12 |  | iOS 9.2
watchOS 2.1
tvOS9.2 |  |  |
2016–01 |  |  |  | Linux 4.4 | Minix 3.4
2016–02 |  |  |  |  | ReactOS 0.4
2016–03 |  | iOS 9.3
watchOS 2.2
tvOS9.3 | OpenBSD 5.9
FreeBSD 10.3 | Linux 4.5 |
2016–04 |  |  |  | Ubuntu 16.04 | IBM i 7.3
ReactOS 0.4.1
2016–05 |  |  |  | Linux 4.6 |
2016–06 |  |  |  | Slackware 14.2
Fedora Linux 24
Linux Mint 18 |
2016–07 |  |  |  | Linux 4.7 |
2016–08 | Windows 10 Anniversary Update (1607)
Windows 10 Mobile Anniversary Update (1607) |  | DragonFly BSD 4.6 | Android 7.0 | ReactOS 0.4.2
2016–09 | Windows Server 2016 (1607) | macOS Sierra (v10.12)
iOS 10
watchOS 3
tvOS10 | OpenBSD 6.0 | Linux 4.8 |
2016–10 |  | iOS 10.1
watchOS 3.1 | NetBSD 7.0.2
FreeBSD 11.0 | Android 7.1
Ubuntu 16.10 |
2016–11 |  |  |  | Oracle Linux 7.3
Fedora Linux 25
openSUSE Leap 42.2 | ReactOS 0.4.3
2016–12 |  | iOS 10.2
tvOS10.1 |  | Linux 4.9
Linux Mint 18.1 | FreeDOS 1.2
2017–01 |  |  |  |  |
2017–02 |  |  |  | Linux 4.10 | ReactOS 0.4.4
2017–03 |  | iOS 10.3
watchOS 3.2
tvOS10.2 | DragonFly BSD 4.8
NetBSD 7.1 |  |
2017–04 | Windows 10 Creators Update (1703)
Windows 10 Mobile Creators Update (1703) |  | OpenBSD 6.1 | Linux 4.11
Ubuntu 17.04 |
2017–05 |  |  |  |  | ReactOS 0.4.5
ArcaOS 5.0.0
2017–06 |  |  |  | Debian 9.0
Fedora Linux 26  |
2017–07 |  |  |  | Linux 4.12
openSUSE Leap 42.3 | BS2000/OSD 11.0
ArcaOS 5.0.1
2017–08 |  |  |  | Android 8.0 |
2017–09 |  | macOS High Sierra (v10.13)
iOS 11
watchOS 4
tvOS11 |  | Linux 4.13 | ReactOS 0.4.6
2017–10 | Windows 10 Fall Creators Update (1709)
Windows 10 Mobile Fall Creators Update (1709)
Windows Server 2016 Fall Creators Update (1709) | iOS 11.1
watchOS 4.1
tvOS11.1 | OpenBSD 6.2
DragonFly BSD 5.0 | Ubuntu 17.10 |
2017–11 |  |  |  | Linux 4.14
Fedora Linux 27 | BareMetal 1.0.0
2017–12 |  | iOS 11.2
watchOS 4.2
tvOS11.2 |  | Android 8.1 | ReactOS 0.4.7
2018–01 |  |  |  | Linux 4.15 |
2018–02 |  |  |  |  | ArcaOS 5.0.2
2018–03 |  | iOS 11.3
watchOS 4.3
tvOS11.3 | NetBSD 7.1.2 |  | Genode Sculpt EA
2018–04 | Windows 10 April 2018 Update (1803) |  | OpenBSD 6.3
DragonFly BSD 5.2 | Linux 4.16
Ubuntu 18.04 (LTS) | ReactOS 0.4.8
2018–05 |  | iOS 11.4
tvOS11.4 |  | Fedora Linux 28
openSUSE Leap 15.0 |
2018–06 |  |  |  | Linux 4.17 | Genode Sculpt TC
2018–07 |  |  | NetBSD 8.0 | SUSE Linux Enterprise 15 | ReactOS 0.4.9
2018–08 |  |  | NetBSD 7.2 | Linux 4.18
Android 9.0 | ArcaOS 5.0.3
Solaris 11.4
2018–09 |  | macOS Mojave (v10.14)
iOS 12
watchOS 5
tvOS12 |  |  | Genode Sculpt VC[70]
2018–10  | Windows 10 October 2018 Update (1809)
Windows Server 2019 (1809)  | iOS 12.1
watchOS 5.1
tvOS12.1  | OpenBSD 6.4  | Linux 4.19
Ubuntu 18.10
Fedora Linux 29  | SerenityOS
2018–11  |  |  |  |  | ReactOS 0.4.10
2018–12  |  |  | DragonFly BSD 5.4
FreeBSD 12.0  | Linux 4.20  |
2019–01  |  |  |  |  |
2019–02  |  |  |  |  |
2019–03  |  | iOS 12.2
watchOS 5.2
tvOS12.2  |  | Linux 5.0  | ReactOS 0.4.11
2019–04  |  |  |  | Ubuntu 19.04
Fedora Linux 30  |
2019–05  | Windows 10 May 2019 Update (1903)  | iOS 12.3
tvOS12.3  | OpenBSD 6.5

NetBSD 8.1

| Linux 5.1
Red Hat Enterprise Linux 8
openSUSE Leap 15.1  |
2019–06  |  |  | DragonFly BSD 5.6  | SUSE Linux Enterprise 15 SP1  | IBM i 7.4
2019–07  |  | iOS 12.4
watchOS 5.3
tvOS12.4  |  | Debian 10.0
Linux 5.2  | ArcaOS 5.0.4
2019–08  |  |  |  |  |
2019–09  |  | iOS 13
iOS 13.1
iPadOS 13.1
watchOS 6
tvOS13  |  | Linux 5.3
Android 10.0  | ReactOS 0.4.12
2019–10  |  | iOS 13.2
iPadOS 13.2
watchOS 6.1
macOS Catalina (v10.15)  | OpenBSD 6.6  | Ubuntu 19.10
Fedora Linux 31  |
2019–11  | Windows 10 November 2019 Update (1909)  |  | FreeBSD 12.1  | Linux 5.4  |
2019–12  |  | iOS 13.3
iPadOS 13.3  |  |  |

## 2020s

[edit]

Further information: Timeline of free and open-source software

Year–month | Windows | Apple | BSD | Linux | Others

|
|
|
|
|

2020–01  |  |  |  | Linux 5.5  | Rrrrrt
2020–02  |  |  | NetBSD 9.0  |  |
2020–03  |  | iOS 13.4
iPadOS 13.4
watchOS 6.2
tvOS13.4  | DragonFly BSD 5.8  | Linux 5.6  |
2020–04  |  |  |  | Ubuntu 20.04
Fedora Linux 32  | ReactOS 0.4.13
2020–05  | Windows 10 May 2020 Update (2004)  | iOS 13.5
iPadOS 13.5  | OpenBSD 6.7  |  | OpenVMS 9.0
2020–06  |  |  |  | Linux 5.7  | ArcaOS 5.0.5
Haiku R1/beta2
2020–07  |  | iOS 13.6
iPadOS 13.6  |  |  |
2020–08  |  |  |  | Linux 5.8  | ArcaOS 5.0.6
2020–09  |  | iOS 13.7
iPadOS 13.7
iOS 14
iPadOS 14.0
watchOS 7.0
tvOS14.0  |  | Android 11 |
2020–10  | Windows 10 October 2020 Update (20H2)  | iOS 14.1
iPadOS 14.1  | NetBSD 9.1
OpenBSD 6.8
FreeBSD 12.2  | Linux 5.9
Fedora Linux 33
Ubuntu 20.10 |
2020–11  |  | macOS Big Sur (v11.0)
iOS 14.2
iPadOS 14.2
watchOS 7.1
tvOS14.2  |  |  |
2020–12  |  | macOS Big Sur (v11.1)
iOS 12.5
iOS 14.3
iPadOS 14.3
watchOS 6.3
watchOS 7.2
tvOS14.3  |  | Linux 5.10  |
2021–01  |  | iOS 14.4
iPadOS 14.4
watchOS 7.3
tvOS14.4  |  |  |
2021–02  |  | macOS Big Sur (v11.2)  |  |  |
2021–03  |  |  |  |  |
2021–04  |  | macOS Big Sur (v11.3)
iOS 14.5
iPadOS 14.5
watchOS 7.4
tvOS14.5  | FreeBSD 13.0  | Fedora Linux 34  |
2021-05  | Windows 10 May 2021 Update (21H1)  | macOS Big Sur (v11.4)
iOS 14.6
iPadOS 14.6
watchOS 7.5
tvOS14.6  | OpenBSD 6.9
DragonFly BSD 6.0
NetBSD 9.2  | Linux 5.12
Ubuntu 21.04 |
2021-06  |  |  |  | Rocky Linux 8
Linux 5.13  |
2021-07  |  | macOS Big Sur (v11.5)
iOS 14.7
iPadOS 14.7
watchOS 7.6
tvOS14.7  |  |  | Haiku R1/beta3
2021-08  | Windows Server 2022 |  |  | Linux 5.14
Debian 11.0  |
2021-09  |  | macOS Big Sur (v11.6)
iOS 14.8
iPadOS 14.8
iOS 15
iPadOS 15.0
watchOS 8.0
tvOS15.0  |  |
2021-10  | Windows 11 | macOS Monterey (v12.0)
iOS 15.1
iPadOS 15.1
watchOS 8.1
tvOS15.1  | OpenBSD 7.0  | Android 12
Ubuntu 21.10 |
2021-11  | Windows 10 November 2021 Update (21H2)  |  |  |
2021-12  |  | macOS Monterey (v12.2)
iOS 15.2
iPadOS 15.2
watchOS 8.3
tvOS15.2  |  |  | ArcaOS 5.0.7
ReactOS 0.4.14
2022-01  |  | iOS 15.3
iPadOS 15.3
watchOS 8.4
tvOS15.3  |  |  |
2022-02  |  |  |  | Slackware 15.0  |
2022-03  |  | macOS Monterey (v12.3)
iOS 15.4
iPadOS 15.4
watchOS 8.5
tvOS15.4  |  | Android 12L |
2022-04  |  |  | OpenBSD 7.1  | Ubuntu 22.04 |
2022-05  |  | macOS Monterey (v12.4)
iOS 15.5
iPadOS 15.5
watchOS 8.6
tvOS15.5  |  |  | IBM i 7.5
2022-06  |  |  |  |  |
2022-07  |  | macOS Monterey (v12.5)
iOS 15.6
iPadOS 15.6
watchOS 8.7
tvOS15.6  |  |  |
2022-08  |  |  |  | Android 13 |
2022-09  | Windows 11 2022 Update (22H2)  | macOS Big Sur (v11.7)
macOS Monterey (v12.6)
iOS 15.7
iPadOS 15.7
iOS 16
watchOS 9.0
tvOS16.0  |  |  |
2022-10  |  | macOS Ventura (13.0)
iOS 16.1
iPadOS 16.0  | OpenBSD 7.2  | Ubuntu 22.10 |
2022-11  |  | macOS Ventura (13.0.1)
iOS 16.1.1  |  |  |
2022-12  |  | iOS 16.2  |  |  |
2023-01  |  |  |  |  |
2023-02  |  |  |  |  |
2023-03  |  |  |  |  |
2023-04  |  |  |  |
2023-05  |  |  |  |  |
2023-06  |  |  |  |  |
2023-07  |  |  |  |  |
2023-08  |  |  |  | Linux 6.5  | ArcaOS 5.1.0
2023-09  |  | macOS Sonoma (14.0)
iOS 17.0
iPadOS 17.0  |  |  |
2023-10  |  |  |  | Android 14 |
2023-11  |  |  |  |  |
2023-12  |  |  |  |  |
2024-01  |  |  |  |  |
2024-02  |  |  |  |  |
2024-03  |  |  |  |  |
2024-04  |  |  |  |  |
2024-05  |  |  |  |  |
2024-06  |  |  |  |  |
2024-07  |  |  |  |  |
2024-08  |  |  |  |  |
2024-09  |  | macOS Sequoia

(15.0)

iOS 18.0

iPadOS 18

watchOS 11

tvOS 18

|  |  |
2024-10  | Windows 11 2024 Update (24H2)  | iOS 18.1  |  | Android 15 |
2024-11  |  |  |  |  |
2024-12  |  |  |  |  |

## See also

[edit]

* Comparison of operating systems
* List of operating systems
* Comparison of real-time operating systems
* Timeline of DOS operating systems
* Timeline of Linux distributions (Diagram 1992–2010)

## References

[edit]

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## External links

[edit]

* UNIX History – a timeline of UNIX 1969 and its descendants at present
* Concise Microsoft O.S. Timeline – a color-coded concise timeline for various Microsoft operating systems (1981–present)
* Bitsavers – an effort to capture, salvage, and archive historical computer software and manuals from minicomputers and mainframes of the 1950s, 1960s, 1970s, and 1980s
* A brief history of operating systems
* Microsoft operating system time-line

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Operating systems

General|

* Comparison
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* User features comparison

Variants|

* Disk operating system
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Kernel|

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Components|

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|

Scheduling
algorithms|

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Memory management,
resource protection|

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Storage access,
file systems|

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Internet|

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Notable
people|

* Kathleen Antonelli
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* David A. Huffman
* Bob Kahn
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* Andrew Koenig
* Semyon Korsakov
* Donald Knuth
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* Ada Lovelace
* Douglas McIlroy
* Marlyn Meltzer
* John von Neumann
* Klára Dán von Neumann
* Dennis Ritchie
* Guido van Rossum
* Claude Shannon
* Frances Spence
* Bjarne Stroustrup
* Ruth Teitelbaum
* Ken Thompson
* Linus Torvalds
* Alan Turing
* Paul Vixie
* Larry Wall
* Stephen Wolfram
* Niklaus Wirth
* Steve Wozniak
* Konrad Zuse

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