Editing Timeline of operating systems

{{short description|none}} <!-- "none" is preferred when the title is sufficiently descriptive; see [[WP:SDNONE]] -->
{{Use mdy dates|date=January 2012}}
{{More citations needed|date=September 2020}}
This article presents a [[Chronology|timeline]] of events in the history of computer [[operating system]]s from 1951 to the current day. For a narrative explaining the overall developments, see the [[History of operating systems]].

==1950s==
* 1951
** [[LEO (computer)|LEO I]] 'Lyons Electronic Office'<ref>{{cite web|url=https://www.bbc.co.uk/dna/h2g2/A1000729|title=h2g2 - Early Electronic Computers - Edited Entry|author=Not Panicking Ltd|date=January 7, 2012|access-date=March 15, 2015}}</ref> 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
** [[GM-NAA I/O|General Motors Operating System]] made for [[IBM 701]]<ref>{{cite web|url=http://www.csee.wvu.edu/~jdm/classes/cs258/OScat/early.html|title=Early Operating Systems|access-date=March 15, 2015|url-status=dead|archive-url=https://web.archive.org/web/20150410053229/http://www.csee.wvu.edu/~jdm/classes/cs258/OScat/early.html|archive-date=April 10, 2015|df=mdy-all}}</ref>
** [[Massachusetts Institute of Technology|MIT]]'s Tape Director operating system made for [[UNIVAC 1103]]<ref>{{cite web|url=http://www.csail.mit.edu/timeline/timeline.php/timeline.php?query=event&id=3|title=LCS/AI Lab Timeline|access-date=March 15, 2015|archive-url=https://web.archive.org/web/20150923211552/http://www.csail.mit.edu/timeline/timeline.php/timeline.php?query=event&id=3|archive-date=September 23, 2015|url-status=dead|df=mdy-all}}</ref><ref>{{cite book |last1=Ross |first1=Douglas |chapter=A personal view of the personal work station: Some firsts in the Fifties |title=Proceedings of the ACM Conference on the history of personal workstations |date=9 January 1986 |pages=19–48 |doi=10.1145/12178.12180|publisher=Association for Computing Machinery|isbn=0-89791-176-8 |author-link=Douglas T. Ross}}</ref>
* 1956
** [[GM-NAA I/O]] for [[IBM 704]], based on General Motors Operating System
* 1957
** [[Atlas Supervisor]] ([[University of Manchester|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, [[IBM 709|709]], and [[IBM 7090|7090]]
* 1959
** [[SHARE Operating System]] (SOS), based on GM-NAA I/O

==1960s==
* 1960
** [[IBM 7090/94 IBSYS|IBSYS]] ([[IBM]] for its [[IBM 7090|7090]] and [[IBM 7094|7094]])
* 1961
** [[Compatible Time-Sharing System|CTSS]] demonstration ([[Massachusetts Institute of Technology|MIT's]] Compatible Time-Sharing System for the [[IBM 7094]])
** [[Burroughs MCP|MCP]] ([[Burroughs Corporation|Burroughs]] Master Control Program) for [[B5000]]
<!-- Does anybody have date for B6500 MCP-->
* 1962
** [[Atlas Supervisor]] ([[University of Manchester|Manchester University]])  (''Atlas computer commissioned'')
** [[BBN Time-Sharing System]]
** [[General Comprehensive Operating System|GCOS]] ([[General Electric|GE's]] General Comprehensive Operating System, originally GECOS, General Electric Comprehensive Operating Supervisor)
* 1963
** [[Honeywell 800|ADMIRAL]]<ref>{{cite web|url=http://www.bitsavers.org/pdf/honeywell/h1800/HONEYWELL_1800-II_A_Large-Scale_Scientific_Processor_1963.pdf |title=Honeywell 1800-II: A Large-Scale Scientific Processor |publisher=Honeywell |access-date=2024-03-27}}</ref>
** [[AN/FSQ-32]], another early time-sharing system begun
** [[Compatible Time-Sharing System|CTSS]] becomes operational ([[Massachusetts Institute of Technology|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 (1963 computer)|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]])
** [[English Electric KDF9|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 and successors|OS/360]] (IBM's primary OS for its S/360 series) (''announced'')
** PDP-6 Monitor ([[Digital Equipment Corporation|DEC]]) descendant renamed [[TOPS-10]] in 1970
** [[CDC SCOPE|SCOPE]] (CDC 3000 series)
* 1965
** [[BOS/360]] (IBM's Basic Operating System)
** [[DECsys]]
** [[IBM TOS/360|TOS/360]] (IBM's Tape Operating System)
** [[Livermore Time Sharing System]] (LTSS)
** [[Multics]] (MIT, GE, [[Bell Labs]] for the [[GE 645|GE-645]]) (''announced'')
** [[Pick operating system]]
** [[CDC 6600|SIPROS 66]] (Simultaneous Processing Operating System)<ref>{{cite web|url=http://bitsavers.org/pdf/cdc/cyber/cyber_70/sipros/60101800A_SIPROS66ref_1965.pdf |title=CONTROL DATA® 6600 Computer System &ndash; Operating System/Reference Manual &ndash; SIPROS 66 |publisher=Control Data Corp. |access-date=2024-03-28}}</ref>
** [[THE multiprogramming system]] ([[Eindhoven University of Technology|Technische Hogeschool Eindhoven]]) development
** [[Time Sharing Operating System|TSOS]] (later VMOS) ([[RCA]])
* 1966
** [[DOS/360]] (IBM's Disk Operating System)
** [[GEORGE (operating system)#GEORGE 1 & 2|GEORGE 1 & 2]] for [[International Computers and Tabulators|ICT]] [[ICT 1900 series|1900 series]]
** [[Honeywell 200|Mod 1]]<ref>{{cite web|url=http://www.bitsavers.org/pdf/honeywell/series200/charlie_gibbs/012_Series_200_Summary_Description.pdf |title=Honeywell Series 200 - Summary Description |publisher=Honeywell |access-date=2024-03-27}}</ref>
** [[Honeywell 200|Mod 2]]<ref>{{cite web|url=https://bitsavers.org/pdf/honeywell/series200/charlie_gibbs/393_Introduction_to_Operating_System_-_Mod_2.pdf |title=Introduction to Series 200/0perating System - Mod 2 |publisher=Honeywell |access-date=2024-03-27}}</ref>
** [[Honeywell 200|Mod 8]]<ref>{{cite web|url=http://s3data.computerhistory.org/brochures/honeywell.osorientationmgmt.1966.102646090.pdf |title=Operating System Orientation for Management - Series 200 Operating System In Review |publisher=Honeywell |access-date=2024-03-27}}</ref>
** [[MS/8]] ([[Richard F. Lary]]'s DEC PDP-8 system)
** [[CDC 3000 series#Software|MSOS]] (Mass Storage Operating System)<ref>{{cite web|url=http://bitsavers.org/pdf/cdc/3x00/24bit/msos/60174100A_3100_3200_3300_3500_Mass_Storage_Sort_MSOS_Sep1967.pdf |title=3100 3200 3300 3500 Computer Systems &ndash; Mass Storage Sort/MSOS (Reference Manual) |publisher=Control Data Corp. |access-date=2024-03-28}}</ref>
** [[OS/360 and successors|OS/360]] (IBM's primary OS for its S/360 series) PCP and MFT (''shipped'')
** [[IBM Remote Access Computing|RAX]]
** Remote Users of Shared Hardware (RUSH), a time-sharing system developed by [[Allen-Babcock]] for the [[IBM System/360 Model 50|IBM 360/50]]
** [[SODA (operating system)|SODA]] for [[Elwro]]'s [[Odra (computer)|Odra 1204]]
** [[Universal Time-Sharing System]] ([[Scientific Data Systems|XDS]] Sigma series)
* 1967
** [[IBM CP-40|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)<ref>{{cite web|url=http://www.clock.org/~jss/work/mts/timeline.html |title=Michigan Terminal System: Time Line |publisher=Clock.org |access-date=2012-10-19}}</ref> (time-sharing system for the IBM S/360-67 and successors)
** [[Incompatible Timesharing System|ITS]] (MIT's Incompatible Timesharing System for the DEC PDP-6 and PDP-10)
** OS/360 [[OS/MVT|MVT]]
** [[ORVYL and WYLBUR|ORVYL]] (Stanford University's time-sharing system for the IBM S/360-67)
** [[TSS (operating system)|TSS/360]] (IBM's Time-sharing System for the S/360-67, never officially released, canceled in 1969 and again in 1971)
** [[WAITS]] ([[Stanford Artificial Intelligence Laboratory|SAIL]], Stanford Artificial Intelligence Laboratory, time-sharing system for DEC PDP-6 and PDP-10, later TOPS-10)
* 1968
** [[IBM Airline Control Program|Airline Control Program (ACP)]] (IBM)
** [[NCR Century 100|B1]] (NCR Century series)<ref>{{Cite web|url=http://www.bitsavers.org/pdf/ncr/NCR_DataPro_Reports/70C-656-01_7208_NCR_Century_Series.pdf|title=25 Years of Real-Time Computing by Todd Poynor|website=bitsavers.org|date=August 1991|access-date=June 24, 2024}}</ref>
** CALL/360, an IBM time-sharing system for System/360
** [[HP 2100|Real-Time Executive]] (RTE) – Hewlett-Packard<ref>{{Cite web|url=http://www.bitsavers.org/pdf/hp/21xx/poyner1.htm|title=25 Years of Real-Time Computing by Todd Poynor|website=bitsavers.org|date=August 1, 1972|access-date=July 16, 2024}}</ref>
** [[THE multiprogramming system]] ([[Eindhoven University of Technology]]) publication
** [[TSS/8]] (DEC for the PDP-8)
** [[VP/CSS]]
* 1969
** [[NCR Century 100|B2]] (NCR Century series)<ref name=NCR01>{{Cite web|url=http://www.bitsavers.org/pdf/ncr/NCR_DataPro_Reports/70C-656-01_7601_NCR_Century_Series.pdf|title=Datapro &ndash; NCR Century Series (70C-656-01a Computers)|website=bitsavers.org|access-date=June 24, 2024}}</ref>
** [[NCR Century 100|B3]] (NCR Century series)<ref name=NCR01></ref>
** [[GEORGE (operating system)#GEORGE 3 & 4|GEORGE 3]] For [[International Computers Limited|ICL]] [[ICT 1900 series|1900 series]]
** [[Multics]] (MIT, GE, Bell Labs for the [[GE 645|GE-645]] and later the [[Honeywell 6000 series|Honeywell 6180]]) (''opened for paying customers in October''<ref>{{cite web|url=http://www.multicians.org/history.html|title=Multics History|access-date=March 15, 2015}}</ref>)
** [[RC 4000 Multiprogramming System]] ([[Regnecentralen|RC]])
** [[TENEX (operating system)|TENEX]] ([[BBN Technologies|Bolt, Beranek and Newman]] for DEC systems, later [[TOPS-20]])
** [[Unix|Unics (later Unix)]] ([[AT&T Corporation|AT&T]], initially on DEC computers)
** [[Xerox Operating System]]

==1970s==
* 1970
** [[DEC BATCH-11/DOS-11|DOS-11]] (PDP-11)
* 1971
** [[Edinburgh Multiple Access System|EMAS]]
** [[CDC Kronos|Kronos]]
** [[RSTS/E|RSTS-11]] 2A-19 (''First released version; PDP-11'')
** [[PDP-15#RSX-15|RSX-15]]
** [[OS/8]]
* 1972
** [[NCR Century 100|B4]] (NCR Century series)<ref name=NCR01></ref>
** [[Commercial Operating System|COS-300]]
** [[Data General RDOS]]
** [[Edos]]
** [[MUSIC/SP]]
** [[OS/4]]
** [[OS 2200#History|OS 1100]]
** [[OS/VS1|Operating System/Virtual Storage 1]] (OS/VS1)
** [[OS/VS2 (SVS)|Operating System/Virtual Storage 2 R1]] (OS/VS2 SVS)
** [[PRIMOS]] (written in [[FORTRAN IV]], that didn't have [[Pointer (computer programming)|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)
** [[VM (operating system)|Virtual Machine Facility/370]] (VM/370), sometimes known as VM/CMS
* 1973
** Эльбрус-1 ([[Elbrus (computer)|Elbrus-1]]) – Soviet computer – created using high-level language uЭль-76 ([[ALGOL 68|AL-76/ALGOL 68]])
** [[Xerox Alto|Alto OS]]
** [[SDS Sigma series#Operating systems|CP-V]] (Control Program V)
** [[RSX-11]]D
** [[RT-11]]
** [[ICL VME|VME]] – implementation language [[S3 (programming language)|S3]] ([[ALGOL 68]])
* 1974
** [[Advanced Comprehensive Operating System|ACOS-2]] ([[NEC]])
** [[Advanced Comprehensive Operating System|ACOS-4]]
** [[Advanced Comprehensive Operating System|ACOS-6]]
** [[CP/M]]<ref>{{Cite web |url=http://www.digitalresearch.biz/CPM.HTM |title=Digital Research home page |access-date=September 27, 2021 }}</ref>
** [[DEC BATCH-11/DOS-11|DOS-11]] V09-20C (''Last stable release, June 1974'')
** Hydra<ref>{{Cite journal
 | journal      = [[Communications of the ACM]] | title = HYDRA:The Kernel of a Multiprocessor Operating System | date = June 1974 | volume = 17 | number = 6  | first1    = W. | last1 = Wulf | first2 = E. | last2 = Cohen | first3 = W. | last3 = Corwin | first4 = A. | last4 = Jones | first5  = R. | last5  = Levin  | first6  = C. | last6 = Pierson | first7  = F. | last7  = Pollack | doi = 10.1145/355616.364017 | s2cid = 8011765 | url= https://www.cs.virginia.edu/people/faculty/pdfs/p337-wulf.pdf | archive-url  = https://web.archive.org/web/20140503035517/https://www.cs.virginia.edu/people/faculty/pdfs/p337-wulf.pdf | archive-date = May 3, 2014 | url-status= dead | df= mdy-all | access-date  = March 26, 2023}}</ref> – capability-based, multiprocessing OS kernel
** [[MONECS]]
** [[HP Multi-Programming Executive|Multi-Programming Executive]] (MPE) – Hewlett-Packard
** [[MVS|Operating System/Virtual Storage 2 R2]] (MVS)
** [[OS/7]]
** [[Interdata|OS/16]]
** [[Interdata 7/32 and 8/32#Operating systems|OS/32]]
** [[Sintran III]]
* 1975
** [[BS2000]] V2.0 (''First released version'')
** [[Commercial Operating System|COS-350]]<ref>{{Cite magazine|date=30 July 1975|title=Time-Sharing Uses Emphasized For DEC Datasystem 350 Series|url=https://books.google.com/books?id=jT2fQqJplN8C&pg=PT29|magazine=Computerworld|publisher=Computerworld, Inc.|access-date=7 March 2023}}</ref>
** [[ISIS (operating system)|ISIS]]
** [[NOS (operating system)|NOS]] (Control Data Corporation)
** [[UNIVAC Series 90|OS/3]] (Univac)
** [[VS/9]] (formerly RCA's [[Time Sharing Operating System|TSOS]], later named VMOS)
** [[Version 6 Unix]]
** [[PDP-15#Software|XVM/DOS]]
** [[PDP-15#XVM/RSX|XVM/RSX]]
* 1976
** [[CAP computer|Cambridge CAP computer]]<ref>{{Cite book
 | url          = https://www.microsoft.com/en-us/research/publication/the-cambridge-cap-computer-and-its-operating-system/
 | title        = The Cambridge CAP Computer and Its Operating System
 | first1       = M. V.
 | last1        = Wilkes
 | first2       = R. M.
 | last2        = Needham
 | editor-first = Peter J.
 | editor-last  = Denning
 | date         = January 1, 1979
 | series       = Operating and Programming Systems Series
 | publisher    = [[North Holland]]
 | via          = www.microsoft.com
 | access-date = March 26, 2023
 }}
</ref> – all operating system procedures written in [[ALGOL 68C]], with some closely associated protected procedures in [[BCPL]]
** [[Cray Operating System]]
** [[DX10]]
** [[FLEX (operating system)|FLEX]]<ref>{{cite web|url=http://www.flexusergroup.com/flexusergroup/fug3.htm|title=FLEX User Group - History|author=Ian P. Blythe|access-date=March 15, 2015}}</ref>
** [[TOPS-20]]
** [[TI-990#Operating systems|TX990/TXDS]]
** [[Tandem Computers|Tandem Nonstop OS v1]]
** [[Thoth (operating system)|Thoth]]
* 1977
** [[Berkeley Software Distribution|1BSD]]
** [[Alpha Microsystems|AMOS]]
** [[KERNAL]]
** [[OASIS operating system]]
** [[Smoke Signal Broadcasting|OS68]]
** [[OS4000]]
** [[RMX (operating system)|RMX-80]]
** [[PolyMorphic Systems#Software 2|System 88 (Exec)]]
** [[System Support Program]] (IBM System/34 and System/36)
** [[TRSDOS]]
** [[OpenVMS|Virtual Memory System (VMS)]] V1.0 (''Initial commercial release, October 25'')
** [[NCR VRX|VRX]] (Virtual Resource eXecutive)
** [[Wang Laboratories#Software|VS Virtual Memory Operating System]]<ref>{{Cite web|url=https://bitsavers.org/pdf/wang/vs/800-1107OS-03_VS_Operating_System_Services_198708.pdf|title=Wang &ndash; Operating System Services|website=bitsavers.org|access-date=June 24, 2024}}</ref>
* 1978
** [[Berkeley Software Distribution|2BSD]]
** [[Apple DOS]]
** [[Control Program Facility]] (IBM System/38)
** [[Cray Time Sharing System]] (CTSS)
** [[IBM 8100 DPCX|DPCX]] (IBM)
** [[IBM DPPX|DPPX]] (IBM)
** [[HDOS]]
** KSOS<ref>{{cite web |url=http://csrc.nist.gov/publications/history/ford78.pdf |title= SECURE MINICOMPUTER OPERATING SYSTEM (KSOS) |website=csrc.nist.gov |access-date=2020-09-14}}</ref> – secure OS design from Ford Aerospace
** KVM/370<ref>{{Cite web |url=http://www.cs.washington.edu/research/projects/poirot3/Oakland/sp/PAPERS/00044538.PDF |title=KVM/370 IN RETROSPECT | first1=B. D. |last1=Gold |first2=R. R |last2=Linde |first3=P. F. |last3=Cudney |access-date=May 2, 2014 |archive-url=https://web.archive.org/web/20140503014429/http://www.cs.washington.edu/research/projects/poirot3/Oakland/sp/PAPERS/00044538.PDF |archive-date=May 3, 2014 |url-status=dead |df=mdy-all }}</ref> – security retro-fit of IBM VM/370
** [[Lisp machine]] (CADR)
** MVS/System Extensions (MVS/SE)
** [[Computer Automation|OS4]] (Naked Mini 4)
** [[PTDOS]]<ref>{{cite web|url=http://www.hartetechnologies.com/manuals/Processor%20Technology/Solus%20News/proteus_v1n1.pdf|title=SOLUS NEWS|editor=Stan Sokolow|access-date=January 30, 2020}}</ref>
** [[TRIPOS]]
** [[UCSD Pascal|UCSD p-System]] (''First released version'')
* 1979
** [[Atari DOS]]
** [[Berkeley Software Distribution|3BSD]]
** [[Honeywell CP-6|CP-6]]
** [[Idris (operating system)|Idris]]
** [[MP/M]]
** MVS/System Extensions R2 (MVS/SE2)
** [[NLTSS]]
** [[PERQ|POS]]
** [[Sinclair BASIC]]
** [[Transaction Processing Facility|Transaction Processing Facility (TPF)]] (IBM)
** UCLA Secure UNIX<ref>{{Cite web|url=https://www.computer.org/csdl/proceedings-article/afips/1979/50870355/12OmNzcPAEy|title=CSDL &#124; IEEE Computer Society|website=www.computer.org}}</ref> – an early secure UNIX OS based on security kernel
** [[UNIX/32V]]
** [[VSE (operating system)|DOS/VSE]]
** [[Version 7 Unix]]

==1980s==
* 1980
** [[86-DOS]]
** [[AOS/VS]] (Data General)
** [[Business Operating System (software)|Business Operating System]]
** [[Convergent Technologies Operating System|CTOS]]<ref>{{cite web |url=http://www.byte.com/art/9412/sec13/art2.htm|archive-url=https://web.archive.org/web/20080828190425/http://www.byte.com/art/9412/sec13/art2.htm |archive-date=August 28, 2008|title=CTOS Revealed|author1=Dirk S. Faegre |author2=Jon Udell|date=December 1994 |publisher=BYTE.com|url-status=dead}}</ref>
** MVS/System Product (MVS/SP) V1
** [[NewDos/80]]
** [[OS-9]]
** [[RMX (operating system)|RMX-86]]
** [[Color BASIC|RS-DOS]]
** [[Apple SOS|SOS]]
** [[VM (operating system)|Virtual Machine/System Product]] (VM/SP)
** [[Xenix]]
* 1981
** [[Acorn MOS]]
** [[Domain/OS|Aegis]] SR1 (''First Apollo/DOMAIN systems shipped on March 27''<ref>{{cite web|url=http://www.zepa.net/apollo/|title=Apollo/DOMAIN Computers|access-date=March 15, 2015}}</ref>)
** [[CP/M-86]]
** [[Intel iAPX 432|iMAX]] – OS for Intel's iAPX 432 capability machine
** [[Wicat Systems|MCS]] (Multi-user Control System)
** [[MS-DOS]]
** [[IBM PC DOS|PC DOS]]
** [[Pilot (operating system)|Pilot]] (''[[Xerox Star]] operating system'')
** [[UNOS (operating system)|UNOS]]
** [[Amdahl UTS|UTS]]
** [[V (operating system)|V]]
** [[VERSAdos]]<ref>{{cite web|url=https://vintageapple.org/byte/pdf/198106_Byte_Magazine_Vol_06-06_Operating_Systems.pdf |title=Byte (magazine) |date=1981-06-01 |access-date=2024-03-29}}</ref>
** [[Versatile Real-Time Executive|VRTX]]
** [[CDC Cyber#CDC CYBER 205|VSOS]] (Virtual Storage Operating System)<ref>{{cite web|url=https://docs.lib.purdue.edu/cgi/viewcontent.cgi?article=1376&context=cstech |title=Implemeting a scalar C compiler on the Cyber 205 |last1=Li |first1=Kuo-Cheng |last2=Schwetman |first2=Herb |publisher=Purdue University |date=1983-10-06 |access-date=2024-03-28}}</ref>
** [[Xinu]] first release
* 1982
** [[Commodore DOS]]
** [[Logical Disk Operating System|LDOS]] (By Logical Systems, Inc. – for the Radio Shack TRS-80 Models I, II & III)
** [[Olivetti M20#PCOS|PCOS]] (Olivetti M20)
** [[pSOS (real-time operating system)|pSOS]]
** [[QNX]]
** [[Stratus VOS]]<ref>{{cite web |url=http://ftp.stratus.com:80/vos/doc/reference/machine_history.txt |last=Green |first=Paul |date=20 May 2002 |title=Stratus Machine History |website=ftp.stratus.com:80 |access-date=13 January 2022 |archive-url=https://web.archive.org/web/20030612194052/http://ftp.stratus.com:80/vos/doc/reference/machine_history.txt |archive-date=12 June 2003 |url-status=dead}}</ref>
** Sun UNIX (later [[SunOS]]) 0.7
** [[Ultrix]]
** [[Unix System III]]
** [[VAXELN]]
* 1983
** [[Coherent (operating system)|Coherent]]
** [[DNIX]]
** [[EOS (8-bit operating system)|EOS]]
** [[GNU]] (''project start'')
** [[Apple Lisa|Lisa Office System 7/7]]
** LOCUS<ref>{{cite tech report |last1=Walker |first1=Bruce |last2=Popek |first2=Gerald |last3=English |first3=Robert |last4=Kline |first4=Charles |last5=Thiel |first5=Greg |date= |title=The LOCUS Distributed Operating System |institution=University of California at Los Angeles |number= |url=https://pages.cs.wisc.edu/~bart/736/papers/locus.pdf }}</ref> – UNIX compatible, high reliability, distributed OS
** MVS/System Product V2 (MVS/Extended Architecture, MVS/XA)
** [[NetWare|Novell NetWare]] ([[Novell S-Net|S-Net]])
** [[Computer Consoles Inc.#PERPOS, Perpetual Processing Operating System|PERPOS]]
** [[Apple ProDOS|ProDOS]]
** [[Concurrent Computer Corporation#Merger with MASSCOMP|RTU]] (Real-Time Unix)
** STOP<ref>{{cite web |url=http://apps.dtic.mil/dtic/tr/fulltext/u2/a229523.pdf |archive-url=https://web.archive.org/web/20150924072244/http://www.dtic.mil/dtic/tr/fulltext/u2/a229523.pdf |url-status=live |archive-date=September 24, 2015 |title=FINAL EVALUATION REPORTM OFN SCOMP |date=1965 |website=www.dtic.mil |access-date=2020-09-14}}</ref> – [[Trusted Computer System Evaluation Criteria|TCSEC]] A1-class, secure OS for SCOMP hardware
** [[SunOS]] 1.0
** [[VSE (operating system)|VSE/System Package]] (VSE/SP) Version 1<ref>{{cite web
 | title       = NEW VSE SYSTEM IPO/E 1.4.0 AND VSE/SYSTEM PACKAGE 1.1.0
 | id          = LTR 283-217
 | date        = July 19, 1983
 | url         = https://www.ibm.com/common/ssi/ShowDoc.wss?docURL=/common/ssi/rep_ca/7/897/ENUS283-217/index.html
 | work        = Announcement Letters
 | publisher   = [[IBM]]
 | access-date = March 26, 2023
 }}
</ref>
* 1984
** [[AMSDOS]]
** [[Convergent Technologies|CTIX]] (Unix variant)
** [[DYNIX]]
** [[Classic Mac OS|Mac OS]] (''System 1.0'')
** [[MSX-DOS]]
** [[NOS/VE]]<ref>{{cite web|url=https://www.uwyo.edu/infotech/aboutit/history/cyber-era.asp |title=University of Wyoming &ndash; Information Technology: About IT: History &ndash; The Cyber Era |access-date=2024-03-28}}</ref><ref>{{cite web|url=https://www.youtube.com/watch?v=HvLlfXZMBXg |title=Westinghouse & Control Data Corporation - NOS/VE (1984) |date=July 17, 2011 |publisher=Westinghouse |access-date=2024-03-28}}</ref>
** [[Panos (operating system)|PANOS]]
** [[PC/IX]]
** [[Ridge Computers|ROS]]
** [[Sinclair QDOS]]
** [[QNX]]
** [[SINIX]]
** [[UNICOS]]
** [[Venix]] 2.0
** [[VM (operating system)|Virtual Machine/Extended Architecture Migration Assistance]] (VM/XA MA)
* 1985
** [[AmigaOS]]
** [[Atari TOS]]
** [[DG/UX]]
** [[DOS Plus]]
** [[GEM (desktop environment)|Graphics Environment Manager]]
** [[Harmony (operating system)|Harmony]]
** [[MIPS RISC/os]]
** [[Oberon (operating system)|Oberon]] – written in [[Oberon (programming language)|Oberon]]
** [[SunOS]] 2.0
** [[Version 8 Unix]]
** [[VM (operating system)|Virtual Machine/Extended Architecture System Facility]] (VM/XA SF)
** [[Windows 1.0]]
** [[Windows 1.0]]1 <!-- following comment is not reflected in "Windows 1.0" article: ('Windows' [1.0] is Not an Operating System (OS), but a shell)-->
** [[Xenix]] 2.0
* 1986
** [[IBM AIX|AIX]] 1.0
** Cronus distributed OS<ref>Vinter, S. T. and Schantz, R. E. 1986. The Cronus distributed operating system. In Proceedings of the 2nd Workshop on Making Distributed Systems Work (Amsterdam, Netherlands, September 8–10, 1986). EW 2. ACM, New York, NY, 1-3.</ref>
** [[FlexOS]]
** GEMSOS<ref>{{cite web |url=http://www.aesec.com/eval/NCSC-FER-94-008.pdf |title= Final evaluation report |date=June 28, 1995 |website= www.aesec.com|access-date=2020-09-14}}</ref> – [[Trusted Computer System Evaluation Criteria|TCSEC]] A1-class, secure kernel for BLACKER VPN & GTNP
** [[GEOS (8-bit operating system)|GEOS]]
** [[Genera (operating system)|Genera]] 7.0
** [[HP-UX]]
** [[SunOS]] 3.0
** [[TR-DOS]]
** [[TRIX (operating system)|TRIX]]
** [[Version 9 Unix]]
* 1987
** [[History of RISC OS|Arthur]] (much improved version came in 1989 under the name [[RISC OS]])
** [[BS2000]] V9.0
** [[IRIX]] (''3.0 is first SGI version'')
** [[Myarc Disk Operating System|MDOS]]
** [[MINIX]] 1.0
** [[OS/2]] (1.0)
** [[PC-MOS/386]]
** Topaz<ref>{{cite tech report |last1=Thacker |first1=Charles P. |last2=Stewart |first2=Lawrence C. |date=1987 |title=Firefly: A Multiprocessor Workstation |institution=Digital Equipment Corporation — Systems Research Center |number= |url=http://bitsavers.trailing-edge.com/pdf/dec/tech_reports/SRC-RR-23.pdf }}</ref> – semi-distributed OS for DEC Firefly workstation written in Modula-2+ and garbage collected
** [[Windows 2.0]] <!-- following comment is not reflected in "Windows 2.0" article: ('Windows' [2.0] is Not an Operating System (OS), but a shell) -->
* 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
** [[Apple GS/OS|GS/OS]]
** [[HeliOS]] 1.0
** [[KeyKOS]] – capability-based microkernel for IBM mainframes with automated persistence of app data
** [[LynxOS]]
** [[Classic Mac OS|Mac OS]] (''[[System 6]]'')
** MVS/System Product V3 (MVS/Enterprise Systems Architecture, MVS/ESA)
** [[OS/2]] (1.1)
** [[IBM i|OS/400]]
** [[RISC iX]]
** [[SpartaDOS X]]
** [[SunOS]] 4.0
** [[TOPS-10]] 7.04 (''Last stable release, July 1988'')
** [[VM (operating system)|Virtual Machine/Extended Architecture System Product]] (VM/XA SP)
** VAX VMM<ref>{{Cite journal
 |      journal = IEEE Journal of Software Engineering
 |        title = A Retrospective on the VAX VMM Security Kernel
 |       volume = 17
 |        issue = 11
 |        pages = 1147–1165
 |         date = November 1991
 |      author1 = Paul A. Karger
 |      author2 = Mary Ellen Zurko
 |      author3 = Douglass W. Bonin
 |      author4 = Andrew H. Mason
 |      author5 = Clifford E. Kahn
 | doi = 10.1109/32.106971
 |          url = http://www.cs.dartmouth.edu/~ccpalmer/classes/cs55/Content/resources/vax_vmm.pdf
 |  access-date = May 2, 2014
 |  archive-url = https://web.archive.org/web/20151112124406/http://www.cs.dartmouth.edu/~ccpalmer/classes/cs55/Content/Resources/vax_vmm.pdf
 | archive-date = November 12, 2015
 |   url-status = dead
 |   df         = mdy-all
 }}
</ref> – [[Trusted Computer System Evaluation Criteria|TCSEC]] A1-class, [[Virtual Machine Manager|VMM]] for [[VAX]] computers (limited use before cancellation)
* 1989
** Army Secure Operating System (ASOS)<ref>{{cite report
 |     title = Quarterly Status Report - Report #1 
 |        id = AD-A206 308
 |      date = 15 March 1989
 |      work = Advance Computing Systems: An Advanced Reasoning-Based Paradigm for Ada Trusted Systems and its Application to MACH
 |       url = https://apps.dtic.mil/dtic/tr/fulltext/u2/a206308.pdf
 |       archive-url = https://web.archive.org/web/20210602213045/https://apps.dtic.mil/dtic/tr/fulltext/u2/a206308.pdf
 |       url-status = live
 |       archive-date = June 2, 2021
 |       via = [[Defense Technical Information Center]] (DTIC)
 | publisher = TRW - Federal Systems Group - Systems Division
 }}</ref> – [[Trusted Computer System Evaluation Criteria|TCSEC]] A1-class secure, real-time OS for [[Ada (programming language)|Ada]] applications
** [[EPOC (operating system)|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'')
** [[OpenServer|SCO UNIX]] (''Release 3'')
** [[TSX-32]]
** [[Version 10 Unix]]
** [[Xenix]] 2.3.4 (''Last stable release'')

==1990s==
* 1990
** [[IBM AIX|AIX]] 3.0
** [[AmigaOS]] 2.0
** [[BeOS]] (v1)
** [[DOS/V]]
** [[Genera (operating system)|Genera]] 8.0
** [[iS-DOS]]
** LOCK<ref>{{cite web|url=http://www.cyberdefenseagency.com/publications/LOCK-An_Historical_Perspective.pdf |title=LOCK-An Historical Perspective |publisher=Cyberdefenseagency.com |access-date=2019-01-28}}</ref> – [[Trusted Computer System Evaluation Criteria|TCSEC]] A1-class secure system with kernel and hardware support for [[type enforcement]]
** MVS/ESA SP Version 4 
** [[NetWare|Novell NetWare]] 3
** [[OS/2]] 1.3
** [[OSF/1]]
** [[RTEMS]]
** [[GEOS (16-bit operating system)|PC/GEOS]]
** [[Windows 3.0]] <!-- 'Windows' [3.0] is not an operating system (OS), but a graphical environment/shell -->
** [[VM (operating system)|Virtual Machine/Enterprise Systems Architecture]] (VM/XA ESA)
** [[VSE (operating system)|VSE/Enterprise Systems Architecture]] (VSE/ESA) Version 1<ref>{{cite web
 | title       = IBM VSE/ENTERPRISE SYSTEMS ARCHITECTURE VERSION 1 RELEASE 1
 | id          = LTR 290-785
 | date        = December 18, 1990
 | url         = https://www.ibm.com/common/ssi/ShowDoc.wss?docURL=/common/ssi/rep_ca/5/897/ENUS290-785/index.html
 | work        = Announcement Letters
 | publisher   = [[IBM]]
 | access-date = March 26, 2023
 }}
</ref>
* 1991
** [[Amoeba (operating system)|Amoeba]] – microkernel-based, POSIX-compliant, distributed OS
** [[GNO/ME]]
** [[Linux kernel|Linux]] 0.01-0.1
** [[Classic Mac OS|Mac OS]] (''[[System 7]]'')
** [[MINIX]] 1.5
** [[PenPoint OS]]
** [[RISC OS]] 3<ref>{{citation
|url        = http://www.wrocc.org.uk/riscos/history.shtml
|title      = A Brief History of RISC OS
|work       = Wakefield RISC OS Computer Club
|access-date = 2011-11-19
}}</ref>
** [[SUNMOS]]
** Trusted Xenix<ref>{{cite web|url=http://webapp1.dlib.indiana.edu/virtual_disk_library/index.cgi/1347159/FID1806/epl/entries/csc-epl-92-001.html|title=EPL Entry CSC-EPL-92/001|access-date=March 15, 2015}}</ref> – rewritten & security enhanced Xenix evaluated at [[Trusted Computer System Evaluation Criteria|TCSEC]] B2-class
* 1992
** [[386BSD]] 0.1
** [[Amiga Unix]] 2.01 (''Latest stable release'')
** [[AmigaOS]] 3.0
** [[BSD/OS|BSD/386]], by [[Berkeley Software Design|BSDi]] and later known as BSD/OS.
** [[Yggdrasil Linux/GNU/X|LGX]]
** [[OpenVMS]] V1.0 (''First OpenVMS AXP (Alpha) specific version, November 1992'')
** [[OS/2]] 2.0 (First i386 32-bit based version)
** [[Plan 9 from Bell Labs|Plan 9]] First Edition (''First public release was made available to universities'')
** [[RSTS/E]] 10.1 (''Last stable release, September 1992'')
** [[Softlanding Linux System|SLS]]
** [[Oracle Solaris|Solaris]] 2.0 (''Successor to SunOS 4.x; based on SVR4 instead of BSD'')
** [[Windows 3.1]] <!-- following comment is not reflected in "Windows 3.1" article: ('Windows' [3.1] is Not an Operating System (OS), but a shell) -->
* 1993
** [[4690 Operating System|IBM 4690 Operating System]]
** [[FreeBSD]]
** [[NetBSD]]
** [[NetWare|Novell NetWare]] 4
** [[Newton OS]]
** [[Nucleus RTOS]]
** [[Genera (operating system)|Open Genera]] 1.0
** [[OS 2200]] ([[Unisys]])
** [[OS/2]] 2.1
** [[PTS-DOS]]
** [[Slackware]] 1.0
** [[Spring (operating system)|Spring]]
** [[Windows NT 3.1]] (''First Windows NT kernel public release'')
* 1994
** [[IBM AIX|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 Linux|Red Hat]]
** [[RISC OS]] 3.5
** [[SPIN (operating system)|SPIN]] – extensible OS written in Modula-3
* 1995
** [[Tru64 UNIX|Digital UNIX]] (''aka'' Tru64 UNIX)
** [[OpenBSD]]
** [[OS/390]]
** [[Plan 9 from Bell Labs|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
** [[IBM AIX|AIX]] 4.2
** [[Debian]] 1.1
** JN<ref>{{cite web |url=http://embedded.soe.ucsc.edu/pubs/tr96-29/html/tr96-29.html |title=JN: An Operating System for an Embedded Java Network Computer UCSC-CRL-96-29 |access-date=2014-04-25 |url-status=dead |archive-url=https://web.archive.org/web/20120824010637/http://embedded.soe.ucsc.edu/pubs/tr96-29/html/tr96-29.html |archive-date=August 24, 2012 |df=mdy-all }}</ref> – microkernel OS for embedded, Java apps
** [[Classic Mac OS|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 Embedded Compact|Windows CE 1.0]]
* 1997
** [[IBM AIX|AIX]] 4.3
** [[DR-WebSpyder]] 1.0
** [[EPOC (operating system)#EPOC32 (1997–2000)|EPOC]] (EPOC32)
** [[Inferno (operating system)|Inferno]]
** [[Mac OS 8]]
** [[MINIX]] 2.0
** [[Nemesis (operating system)|Nemesis]]<ref>various 1997 publications listed on [http://www.cl.cam.ac.uk/research/srg/netos/old-projects/nemesis/documentation.html the Nemesis website], retrieved 2013-08-13</ref>
** [[RISC OS]] 3.7
** [[SkyOS]]
** [[Windows Embedded Compact|Windows CE 2.0]]
* 1998
** [[DR-WebSpyder]] 2.0
** [[Junos]]
** [[Novell NetWare]] 5
** [[RT-11]] 5.7 (''Last stable release, October 1998'')
** [[Solaris (operating system)|Solaris]] 7 (''first [[64-bit computing|64-bit]] Solaris release – names from this point drop "2.", otherwise would've been Solaris 2.7'')
** [[Windows 98]]
* 1999
** [[AmigaOS version history#AmigaOS 3.5, 3.9|Amiga OS 3.5]] ''(unofficial)''
** [[AROS Research Operating System|AROS]] (''Boot for the first time in Stand Alone version'')
** [[Inferno (operating system)|Inferno]] Second Edition (''Last distribution (Release 2.3, {{circa|July 1999}}) from Lucent's Inferno Business Unit'')<ref>{{citation
|url        = http://www.vitanuova.com/inferno/downloads.html
|title      = Inferno Downloads
|work       = [[Vita Nuova Holdings]]
|access-date = 2011-11-19
}}</ref>
** [[Mac OS 9]]
** [[OS/2]] Warp 4.5
** [[RISC OS]] 4
** [[Windows 98 Second Edition|Windows 98 (2nd edition)]]

==2000s==
{| class="wikitable sortable"
|-
! Year–month || [[Microsoft Windows|Windows]] || [[Apple Inc.|Apple]] || [[Berkeley Software Distribution|BSD]] || [[Linux]] || Others
|-
| 2000–01 || || || || ||

|-
| 2000–02 || [[Windows 2000]]<ref>{{citation
|url        = http://www.microsoft.com/presspass/press/1999/Dec99/W2KrtmPR.mspx
|title      = Microsoft Releases Windows 2000 to Manufacturing
|work       = [[Microsoft]] News Center
|date       = 1999-12-15
|access-date = 2011-11-19
}}</ref> || || || || [[Solaris (operating system)|Solaris]] 8
|-
| 2000–03 || || || [[FreeBSD]] 4.0 || [[Red Hat Linux]] 6.2E || [[AtheOS]]<br />[[BeOS R5]]
|-
| 2000–04 || [[Pocket PC 2000]] || || || ||
|-
| 2000–05 || || || || || [[MenuetOS]]
|-
| 2000–06 || [[Windows Embedded Compact|Windows CE 3.0]] || || [[OpenBSD]] 2.7 || || [[Plan 9 from Bell Labs|Plan 9]] Third Edition<ref>{{citation
|url        = http://plan9.bell-labs.com/plan9/about.html
|title      = Plan 9 from Bell Labs Overview
|work       = [[Bell Labs]]
|access-date = 2011-11-19
}}</ref>
|-
| 2000–07 || [[Windows 2000]] Service Pack 1 ||  || || || [[OS/400]] V4R5
|-
| 2000–08 || || || || [[Debian]] 2.2 || [[MorphOS]] 0.1<ref>{{citation
|url        = http://obligement.free.fr/articles/morphos01.php
|title      = Test de MorphOS 0.1
|language   = fr
|first      = Alexandre
|last       = Balaban
|year       = 2000
|access-date = 2011-11-19
}}</ref>
|-
| 2000–09 || [[Windows Me|Windows Millennium Edition]]<ref>{{citation
|url        = http://www.microsoft.com/Presspass/press/2000/sept00/availabilitypr.mspx
|title      = Microsoft Announces Immediate Availability Of Windows Millennium Edition (Windows Me)
|work       = [[Microsoft]] News Center
|date       = 2000-09-14
|access-date = 2011-11-19
}}</ref> || [[Mac OS X Public Beta]] || ||[[SUSE Linux]] 7.0 ||
|-
| 2000–10 || || || || || [[z/OS]]<br />[[z/VM]]<br />[[MorphOS]] 0.2
|-
| 2000–11 || || || || ||
|-
| 2000–12 || || || [[NetBSD]] 1.5<br />[[OpenBSD]] 2.8 || || [[AmigaOS]] 3.9<ref>{{citation
|url        = http://www.amigahistory.co.uk/amigaos39.html
|title      = AmigaOS 3.9 release
|date       = 2000-12-04
|work       = Amiga History (UK)
|access-date = 2012-07-22
}}</ref><br />[[HP-UX]] 11i
|-
| 2001–01 || || [[Mac OS 9]].1 || || ||
|-
| 2001–02 || || || || || [[MorphOS]] 0.4<ref>{{citation
|url        = http://amiga.czex.com/history/2_01e.html
|title      = New MorphOS 0.4 Release
|date       = 2001-02-15
|first      = Ralph
|last       = Schmidt
|access-date = 2011-11-19
}}</ref>
|-
| 2001–03 || || [[Mac OS X 10.0|Mac OS X Cheetah]] (v10.0) || || ||
|-
| 2001–04 || || || || ||
|-
| 2001–05 || [[Windows 2000]] Service Pack 2 || || || || [[IBM AIX|AIX]] 5L 5.1<br />[[OS/400]] V5R1
|-
| 2001–06 || || || [[OpenBSD]] 2.9 || ||
|-
| 2001–07 || || [[Mac OS 9]].2 || || || [[eComStation]] 1.0
|-
| 2001–08 || || || || || [[Haiku (operating system)|Haiku]]<ref>{{citation
|url        = http://haiku-os.org/about/history
|title      = Project History
|access-date = 2011-11-19
}}</ref>
|-
| 2001–09 || || [[Mac OS X 10.1|Mac OS X Puma]] (v10.1) || || ||
|-
| 2001–10 || [[Pocket PC 2002]]<br />[[Windows XP]]<ref>{{citation
|url        = http://www.microsoft.com/presspass/press/2001/aug01/08-24WinXPRTMPR.mspx
|title      = Windows XP to Take the PC to New Heights
|work       = [[Microsoft]] News Center
|date       = 2001-08-24
|access-date = 2011-11-19
}}</ref><br />[[Windows XP 64-bit Edition|Windows XP 64-bit Edition 2002]]<ref>{{Cite web|url=http://www.microsoft.com/presspass/press/2001/may01/05-2364bitpr.mspx|title=Microsoft Unveils Plans for 64-Bit Windows Platform|website=[[Microsoft]]}}</ref> || || || || [[Novell NetWare]] 6.0
|-
| 2001–11 || || || || ||
|-
| 2001–12 || || || [[OpenBSD]] 3.0 || || [[OS/2]] 4.52
|-
| 2002–01 || [[Windows Embedded Compact|Windows CE 4.x]] || || || || [[JX (operating system)|JX microkernel for Java]]<br /> Sanos microkernel<ref>{{cite web|url=http://www.jbox.dk/sanos/ |title=Sanos |publisher=Jbox.dk |access-date=2019-01-28}}</ref> for net appliances <br />[[K42|K42 microkernel for NUMA machines]]
|-
| 2002–02 || || || || ||
|-
| 2002–03 || || || || [[Red Hat Enterprise Linux]] 2.1 AS ||
|-
| 2002–04 || || || || [[SUSE Linux]] 8.0 || [[Plan 9 from Bell Labs|Plan 9]] Fourth Edition<ref>{{citation
|url        = http://plan9.bell-labs.com/sys/doc/release4.html
|title      = Plan 9 From Bell Labs Fourth Release Notes
|date=April 2002
|work       = [[Bell Labs]]
|access-date = 2011-11-19
}}</ref>
|-
| 2002–05 || || || [[OpenBSD]] 3.1 || || [[Solaris (operating system)|Solaris]] 9 ([[SPARC]])
|-
| 2002–06 || || || || ||
|-
| 2002–07 || || || || [[Debian]] 3.0 || [[Syllable Desktop|Syllable]] 0.4.0<ref>{{citation
 |url         = http://web.syllable.org/documentation/FAQ.html
 |title       = Frequently Asked Questions
 |chapter     = What is the history of Syllable?
 |chapter-url = http://web.syllable.org/documentation/FAQ.html#1_2
 |access-date  = 2011-11-19
 |url-status     = dead
 |archive-url  = https://web.archive.org/web/20110107003333/http://web.syllable.org/documentation/FAQ.html
 |archive-date = January 7, 2011
 |df          = mdy-all
}}</ref>
|-
| 2002–08 || [[Windows 2000]] Service Pack 3 || [[Mac OS X 10.2|Mac OS X Jaguar]]<ref>{{citation
 |url         = https://www.apple.com/pr/library/2002/aug/23jaguar.html
 |title       = Jaguar "Unleashed" at 10:20 p.m. Tonight
 |work        = [[Apple Inc.]]
 |date        = 2002-08-23
 |access-date  = 2011-11-19
 |url-status     = dead
 |archive-url  = https://web.archive.org/web/20031008122040/http://www.apple.com/macosx/
 |archive-date = October 8, 2003
 |df          = mdy-all
}}</ref> (v10.2) || || || [[OS/400]] V5R2
|-
| 2002–09 || [[Windows XP Service Pack 1]] || || [[NetBSD]] 1.6 || || [[OS2000]]
|-
| 2002–10 || || || || || [[IBM AIX|AIX]] 5.2
|-
| 2002–11 || || || [[OpenBSD]] 3.2 || || [[MorphOS]] 1.0
|-
| 2002–12 || || || || || [[MorphOS]] 1.1
|-
| 2003–01 || || || [[FreeBSD]] 5.0 || || [[Solaris (operating system)|Solaris]] 9 ([[x86]]) <br />JNode<ref>{{cite web |url=http://2010.rmll.info/IMG/pdf/LSM2010-OS-JNode-2.pdf |title=Node, an operating system based on Java |date=2010 |website=2010.rmll.info |access-date=2020-09-14 |archive-date=September 15, 2012 |archive-url=https://web.archive.org/web/20120915061826/http://2010.rmll.info/IMG/pdf/LSM2010-OS-JNode-2.pdf |url-status=dead }}</ref> – [[JavaOS]] successor
|-
| 2003–02 || || || || || [[MorphOS]] 1.2<br />[[ReactOS]] 0.1.0
|-
| 2003–03 || [[Windows XP 64-bit Edition|Windows XP 64-bit Edition 2003]]<ref>{{citation
|url        = http://www.microsoft.com/presspass/press/2003/mar03/03-28WinXP64BitPR.mspx
|title      = Windows XP 64-bit Edition for Itanium systems, Version 2003 Press release
|work       = [[Microsoft]] News Center
|date       = 2003-03-28
|access-date = 2011-11-19
}}</ref> || || || || [[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<br />[[Windows Mobile 2003]] || || || || [[OpenVMS]] 8.0
|-
| 2003–07 || || || || ||
|-
| 2003–08 || || || || || [[Novell NetWare]] 6.5<br />[[MorphOS]] 1.4
|-
| 2003–09 || || || || || [[HP-UX]] 11i v2
|-
| 2003–10 || || [[Mac OS X Panther]] (v10.3) || || [[Red Hat Enterprise Linux]] 3<br />[[SUSE Linux]] 9.0 ||
|-
| 2003–11 || || || [[OpenBSD]] 3.4 || [[Fedora Linux|Fedora Core]] 1 ||
|-
| 2003–12 || || || || [[Linux kernel|Linux]] 2.6.0<ref>{{citation
|url        = https://www.kernel.org/pub/linux/kernel/v2.6/
|title      = Kernel.org archive
|access-date = 2011-11-19
}}</ref> || [[XTS-400]]
|-
| 2004–01 || || || || [[Linux kernel|Linux]] 2.6.1 || [[ReactOS]] 0.2.0
|-
| 2004–02 || || || || [[Linux kernel|Linux]] 2.6.2, 2.6.3 ||
|-
| 2004–03 || || || || [[Linux kernel|Linux]] 2.6.4 || [[ReactOS]] 0.2.1
|-
| 2004–04 || || || || [[Linux kernel|Linux]] 2.6.5 || [[ReactOS]] 0.2.2
|-
| 2004–05 || || || [[OpenBSD]] 3.5 || [[Linux kernel|Linux]] 2.6.6<br />[[Fedora Linux|Fedora Core]] 2 ||
|-
| 2004–06 || || || || || [[i5/OS]] V5R3<br />[[ReactOS]] 0.2.3
|-
| 2004–07 || || || [[DragonFly BSD]] 1.0 || ||
|-
| 2004–08 || [[Windows Embedded Compact|Windows CE 5.x]]<br />[[Windows XP Service Pack 2]] || || || [[Linux kernel|Linux]] 2.6.8 || [[IBM AIX|AIX]] 5.3<br />[[eComStation]] 1.2
|-
| 2004–09 || || || || || [[ReactOS]] 0.2.4
|-
| 2004–10 || || || || [[Linux kernel|Linux]] 2.6.9<br />[[Ubuntu version history#0410|Ubuntu 4.10]] ||
|-
| 2004–11 || || || [[OpenBSD]] 3.6 || [[Fedora Linux|Fedora Core]] 3 ||
|-
| 2004–12 || || || [[NetBSD]] 2.0 || [[Linux kernel|Linux]] 2.6.10 ||
|-
| 2005–01 || || || || || [[Solaris (operating system)|Solaris]] 10 <br />[[ReactOS]] 0.2.5
|-
| 2005–02 || || || || [[Red Hat Enterprise Linux]] 4 || [[OpenVMS]] 8.2<br>[[z/VSE]]
|-
| 2005–03 || [[Windows Server 2003 Service Pack 1]]<br />[[Windows XP Professional x64 Edition]] || || || [[Linux kernel|Linux]] 2.6.11<br />[[Novell Open Enterprise Server]]  || [[MorphOS]] 1.4.4
|-
| 2005–04 || || [[Mac OS X Tiger]] (v10.4) || [[DragonFly BSD]] 1.2 || [[Ubuntu version history#0504|Ubuntu 5.04]] || [[ReactOS]] 0.2.6<br />[[MorphOS]] 1.4.5
|-
| 2005–05 || [[Windows Mobile 5.0]] || || [[OpenBSD]] 3.7 || ||
|-
| 2005–06 || || || || [[Linux kernel|Linux]] 2.6.12<br />[[Fedora Linux|Fedora Core]] 4<br />[[Debian]] 3.1 ||
|-
| 2005–07 || || || || ||
|-
| 2005–08 || || || || [[Linux kernel|Linux]] 2.6.13 || [[ReactOS]] 0.2.7<br />[[MorphOS]] 1.4.5 Classic
|-
| 2005–09 || || || || ||
|-
| 2005–10 || || || || [[Linux kernel|Linux]] 2.6.14<br />[[Ubuntu version history#0510|Ubuntu 5.10]]<br />[[SUSE Linux]] 10.0 || [[ReactOS]] 0.2.8
|-
| 2005–11 || || || [[FreeBSD]] 6.0<br />[[OpenBSD]] 3.8 || ||
|-
| 2005–12 || || || [[NetBSD]] 3.0 || || [[ReactOS]] 0.2.9
|-
| 2006–01 || || || [[DragonFly BSD]] 1.4 || [[Linux kernel|Linux]] 2.6.15 || [[i5/OS]] V5R4<br />[[Solaris (operating system)|Solaris]] 10 1/06
|-
| 2006–02 || || || || ||
|-
| 2006–03 || [[Windows Server 2003 R2]] || || || [[Linux kernel|Linux]] 2.6.16<br />[[Fedora Linux|Fedora Core]] 5 ||
|-
| 2006–04 || || || || ||
|-
| 2006–05 || || || [[OpenBSD]] 3.9 || || [[SymbOS]]<br />[[MINIX]] 3.1.2
|-
| 2006–06 || || || || [[Linux kernel|Linux]] 2.6.17<br />[[Ubuntu version history#0606|Ubuntu 6.06]] (LTS) || [[Solaris (operating system)|Solaris]] 10 6/06
|-
| 2006–07 || || || [[DragonFly BSD]] 1.6 || ||
|-
| 2006–08 || || || || || [[BS2000|BS2000/OSD]] v7.0<ref>{{citation
|url = http://www.hoise.com/primeur/06/articles/contentsmonthly200608.html
|title = News digest August 2006
|date = August 2006
|access-date = 2011-11-19
}}</ref><br />[[ReactOS]] 0.3.0
|-
| 2006–09 || [[Windows Embedded Compact|Windows CE 6.0]] || || || [[Linux kernel|Linux]] 2.6.18 || [[FreeDOS]] 1.0<br />[[OpenVMS]] 8.3
|-
| 2006–10 || || || || [[Fedora Linux|Fedora Core]] 6<br />[[Ubuntu version history#0610|Ubuntu 6.10]]<br />[[Slackware]] 11.0 ||
|-
| 2006–11 || || || [[OpenBSD]] 4.0 || [[Linux kernel|Linux]] 2.6.19 || [[AmigaOS 4|AmigaOS 4.0]]<br />[[Solaris (operating system)|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 kernel|Linux]] 2.6.20 || [[Inferno (operating system)|Inferno]] Fourth Edition
|-
| 2007–03 || [[Windows Server 2003 Service Pack 2]] || || || [[Red Hat Enterprise Linux]] 5 || [[ReactOS]] 0.3.1
|-
| 2007–04 || || || || [[Linux kernel|Linux]] 2.6.21<br />[[Ubuntu version history#0704|Ubuntu 7.04]]<br />[[Debian]] 4.0 ||
|-
| 2007–05 || || [[iPhone OS 1]]
|| [[OpenBSD]] 4.1 || [[Fedora Linux]] 7 ||
|-
| 2007–06 || || || || ||
|-
| 2007–07 || || || || [[Linux kernel|Linux]] 2.6.22<br />[[Slackware]] 12.0 ||
|-
| 2007–08 || || || [[DragonFly BSD]] 1.10 || || [[Solaris (operating system)|Solaris]] 10 8/07
|-
| 2007–09 || || [[iPhone OS 1]].1 || || || [[HP-UX]] 11i v3 <br />[[ReactOS]] 0.3.3
|-
| 2007–10 || || [[Mac OS X Leopard]] (v10.5) || || [[Linux kernel|Linux]] 2.6.23<br />[[Ubuntu version history#0710|Ubuntu 7.10]] || [[OpenVMS]] 8.3-1H1
|-
| 2007–11 || [[Windows Home Server]] || || [[OpenBSD]] 4.2 || [[Fedora Linux]] 8<br />[[gOS (operating system)|gOS]] || [[IBM AIX|AIX]] 6.1, 
|-
| 2007–12 || || || [[NetBSD]] 4.0 || ||
|-
| 2008–01 || || || || [[Linux kernel|Linux]] 2.6.24 || [[ReactOS]] 0.3.4
|-
| 2008–02 || [[Windows Vista Service Pack 1]]<br />[[Windows Server 2008]] || || [[DragonFly BSD]] 1.12<br />[[FreeBSD]] 7.0 || ||
|-
| 2008–03 || || || || || [[IBM i]] 6.1<br />[[Singularity (operating system)|Singularity]] 1.1
|-
| 2008–04 || [[Windows Mobile 6.1]]<br />[[Windows XP Service Pack 3]] || || || [[Linux kernel|Linux]] 2.6.25<br />[[Ubuntu version history#804|Ubuntu 8.04]] (LTS) ||
|-
| 2008–05 || || || [[OpenBSD]] 4.3 || [[Fedora Linux]] 9<br />[[Slackware]] 12.1 || [[Solaris (operating system)|Solaris]] 10 5/08<br />[[OpenSolaris]] 2008.05<br />[[BS2000|BS2000/OSD]] v8.0A
|-
| 2008–06 || || || || [[SUSE Linux]] 11.0 || [[MorphOS]] 2.0<br />[[ReactOS]] 0.3.5
|-
| 2008–07 || || [[iPhone OS 2]] || [[DragonFly BSD]] 2.0 || [[Linux kernel|Linux]] 2.6.26 ||
|-
| 2008–08 || || || || || [[XTS-400|STOP]] 6.5<br />[[ReactOS]] 0.3.6
|-
| 2008–09 || || [[iPhone OS 2]].1 || || || [[AmigaOS 4.1]]<br />[[z/OS]] V1R10<br />[[MorphOS]] 2.1
|-
| 2008–10 || || || || [[Linux kernel|Linux]] 2.6.27<br />[[Ubuntu version history#0810|Ubuntu 8.10]]<br />[[Android (operating system)|Android]] 1.0 || [[Solaris (operating system)|Solaris]] 10 10/08<br />[[Open Kernel Labs|OKL4 3.0]]
|-
| 2008–11 || || [[iPhone OS 2]].2 || [[OpenBSD]] 4.4 || [[Fedora Linux]] 10 || [[Singularity (operating system)|Singularity]] 2.0<br />[[ReactOS]] 0.3.7<br />[[Genode]] 8.11<ref>{{Cite web|url=https://genode.org/documentation/release-notes/8.11|title=Genode - Release notes for the Genode OS Framework 8.11|website=genode.org}}</ref>
|-
| 2008–12 || || || || [[Linux kernel|Linux]] 2.6.28<br />[[Slackware]] 12.2 || [[MorphOS]] 2.2<br />[[OpenSolaris]] 2008.11
|-
| 2009–01 || || || || ||
|-
| 2009–02 || || || [[DragonFly BSD]] 2.2 || [[Debian]] 5.0<br />[[Android (operating system)|Android]] 1.1 || [[ReactOS]] 0.3.8
|-
| 2009–03 || || || || [[Linux kernel|Linux]] 2.6.29 ||
|-
| 2009–04 || || || [[NetBSD]] 5.0 || [[Ubuntu version history#0904|Ubuntu 9.04]]<br />[[Android (operating system)|Android]] 1.5 || [[ReactOS]] 0.3.9
|-
| 2009–05 || [[Windows Mobile 6.5]]<br />[[Windows Vista Service Pack 2]] || || [[OpenBSD]] 4.5 || || [[Solaris (operating system)|Solaris]] 10 5/09
|-
| 2009–06 || || [[iPhone OS 3]]
|| || [[Linux kernel|Linux]] 2.6.30<br />[[Fedora Linux]] 11 <br />[[webOS|Palm webOS]] 1 || [[AmigaOS 4.1]]<br />[[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 kernel|Linux]] 2.6.31<br />[[Android (operating system)|Android]] 1.6 || 
|-
| 2009–10 || [[Windows 7]]<br />[[Windows Server 2008 R2]] || || [[OpenBSD]] 4.6 || [[Ubuntu version history#0910|Ubuntu 9.10]]<br />[[Android (operating system)|Android]] 2.0 || [[Solaris (operating system)|Solaris]] 10 10/09<br />[[MorphOS]] 2.4
|-
| 2009–11 || || || [[FreeBSD]] 8.0 || [[Fedora Linux]] 12<br />[[openSUSE]] 11.2 ||
|-
| 2009–12 || || || || [[Linux kernel|Linux]] 2.6.32 || [[ReactOS]] 0.3.11
|}

==2010s==
{| class="wikitable sortable"
|-
! Year–month || [[Microsoft Windows|Windows]] || [[Apple Inc.|Apple]] || [[Berkeley Software Distribution|BSD]] || [[Linux]] || Others
|-
| 2010–01 || || || ||[[Android (operating system)|Android]] 2.1 || [[AmigaOS 4|AmigaOS 4.1 Upd. 1]]
|-
| 2010–02 || || || || [[Linux kernel|Linux]] 2.6.33 ||
|-
| 2010–03 || || || || ||
|-
| 2010–04 || || [[iPhone OS 3]].2 || [[DragonFly BSD]] 2.6 || [[Ubuntu 10.04]] (LTS) || [[AmigaOS 4#AmigaOS 4.1 Update 2|AmigaOS 4.1 Upd. 2]]<br />[[IBM i]] 7.1
|-
| 2010–05 || || || [[OpenBSD]] 4.7 || [[Linux kernel|Linux]] 2.6.34<br />[[Fedora Linux]] 13<br />[[Android (operating system)|Android]] 2.2 || [[eComStation]] 2.0
|-
| 2010–06 || || [[iOS 4]] || || || [[MorphOS]] 2.5<br />[[OpenVMS]] 8.4
|-
| 2010–07 || || || || [[openSUSE]] 11.3 ||
|-
| 2010–08 || || || || [[Linux kernel|Linux]] 2.6.35 ||
|-
| 2010–09 || || [[iOS 4]].1 || || ||[[Solaris (operating system)|Solaris]] 10 9/10<br />[[IBM AIX|AIX]] 7.1
|-
| 2010–10 ||[[Windows Phone 7]]|| || [[DragonFly BSD]] 2.8 || [[Linux kernel|Linux]] 2.6.36<br />[[Fedora Linux]] 14<br />[[Ubuntu 10.10]] || [[MorphOS]] 2.6<br />[[ReactOS]] 0.3.12
|-
| 2010–11 || || [[iOS 4]].2 || [[NetBSD]] 5.1<br />[[OpenBSD]] 4.8 || [[Red Hat Enterprise Linux]] 6 || 
|-
| 2010–12 || || || || [[Android (operating system)|Android]] 2.3 ||[[MorphOS]] 2.7
|-
| 2011–01 || || || || [[Linux kernel|Linux]] 2.6.37 ||
|-
| 2011–02 || [[Windows 7 Service Pack 1]] || || || [[Debian]] 6.0<br />[[Android (operating system)|Android]] 3.0 ||
|-
| 2011–03 || [[Windows Embedded Compact|Windows CE 7.0]] || [[iOS 4]].3 || || [[Linux kernel|Linux]] 2.6.38<br />[[openSUSE]] 11.4 || [[ReactOS]] 0.3.13
|-
| 2011–04 || [[Windows Home Server 2011]] || || [[DragonFly BSD]] 2.10 || [[Ubuntu 11.04]]<br />[[Slackware]] 13.37|| 
|-
| 2011–05 || || || [[OpenBSD]] 4.9 || [[Linux kernel|Linux]] 2.6.39<br />[[Fedora Linux]] 15<br />[[Android (operating system)|Android]] 3.1 || [[AmigaOS 4|AmigaOS 4.1 Upd. 1]] (for Classic)<br />[[eComStation]] 2.1
|-
| 2011–06 || || [[iOS 5]] || || [[ChromeOS]] (first shipped) || [[9front]]
|-
| 2011–07 || || [[Mac OS X v10.7|Mac OS X Lion]] (v10.7) || || [[Linux kernel|Linux]] 3.0<br />[[Android (operating system)|Android]] 3.2<br />[[webOS|HP webOS]] 3 || [[AmigaOS 4|AmigaOS 4.1 Upd. 3]]
|-
| 2011–08 || || || || ||
|-
| 2011–09 ||[[Windows Phone 7.5]]|| || || ||
|-
| 2011–10 || || || || [[Linux kernel|Linux]] 3.1<br />[[Ubuntu 11.10]]<br />[[Android (operating system)|Android]] 4.0 || 
|-
| 2011–11 || || || [[OpenBSD]] 5.0 || [[Fedora Linux]] 16<br />[[openSUSE]] 12.1 || [[Solaris (operating system)|Solaris]] 11 11/11
|-
| 2011–12 || || || || ||[[AmigaOS 4|AmigaOS 4.1 Upd. 4]]
|-
| 2012–01 || || || [[FreeBSD]] 9.0 || [[Linux kernel|Linux]] 3.2 || [[FreeDOS]] 1.1
|-
| 2012–02 || || || [[DragonFly BSD]] 3.0 || || [[ReactOS]] 0.3.14<br />[[Minix]] 3.2
|-
| 2012–03 || || [[iOS 5]].1 || || [[Linux kernel|Linux]] 3.3<br />[[Android (operating system)|Android]] 4.0.4|| 
|-
| 2012–04 || || || || [[Ubuntu 12.04]] (LTS) ||
|-
| 2012–05 || || || [[OpenBSD]] 5.1 || [[Linux kernel|Linux]] 3.4<br />[[Fedora Linux]] 17 || DexOS
|-
| 2012–06 || || || || || [[BS2000|BS2000/OSD]] 9.0<br />[[MorphOS]] 3.0
|-
| 2012–07 || || [[OS X Mountain Lion]] (v10.8) || || [[Linux kernel|Linux]] 3.5<br />[[Android (operating system)|Android]] 4.1<br />[[openSUSE]] 12.2 || [[MorphOS]] 3.1<br />[[AmigaOS 4|AmigaOS 4.1 Upd. 5]]
|-
| 2012–08 || || || || ||
|-
| 2012–09 || [[Windows Server 2012]] || [[iOS 6]] || || [[Linux kernel|Linux]] 3.6<br />[[Slackware]] 14.0<br />[[Qubes OS]]|| 
|-
| 2012–10 || [[Windows 8]]<br />[[Windows Phone 8]] || || [[NetBSD]] 6.0<br />[[OpenBSD]] 5.2 || [[Ubuntu 12.10]] || [[Solaris (operating system)|Solaris]] 11.1
|-
| 2012–11 || || || [[DragonFly BSD]] 3.2 || [[Android (operating system)|Android]] 4.2 || [[Haiku (operating system)|Haiku]] R1 Alpha 4
|-
| 2012–12 || || || [[FreeBSD]] 9.1 || || 
|-
| 2013–01 || || [[iOS 6]].1 || || [[Fedora Linux]] 18 || [[BlackBerry 10]]<br />[[Solaris (operating system)|Solaris]] 10 1/13
|-
| 2013–02 || [[Windows Phone 7.8]] || || || || 
|-
| 2013–03 || || || || [[openSUSE]] 12.3 ||
|-
| 2013–04 || || || [[DragonFly BSD]] 3.4 || [[Linux kernel|Linux 3.9]]<br />[[Ubuntu 13.04]] ||
|-
| 2013–05 || || || [[NetBSD]] 6.1<br />[[OpenBSD]] 5.3 || [[Debian]] 7.0 || [[ReactOS]] 0.3.15<br />[[MorphOS]] 3.2
|-
| 2013–06 || [[Windows Embedded Compact|Windows CE 8.0 (2013)]] || || || [[Linux kernel|Linux]] 3.10 ||
|-
| 2013–07 || || || || [[Fedora Linux]] 19<br />[[Android (operating system)|Android]] 4.3 ||
|-
| 2013–08 || || || || ||
|-
| 2013–09 || || [[iOS 7]] || [[FreeBSD]] 9.2 || [[Linux kernel|Linux]] 3.11 || [[MorphOS]] 3.3<br />[[z/OS]] Version 2.1
|-
| 2013–10 || [[Windows 8.1]]<br />[[Windows Server 2012 R2]] || [[OS X Mavericks]] (v10.9) || || [[Ubuntu 13.10]] ||
|-
| 2013–11 || || || [[DragonFly BSD]] 3.6<br />[[OpenBSD]] 5.4 || [[Slackware]] 14.1<br />[[openSUSE]] 13.1<br />[[Android (operating system)|Android]] 4.4<br />[[Linux kernel|Linux]] 3.12 ||
|-
| 2013–12 || || || || [[Fedora Linux]] 20 || [[MorphOS]] 3.4<br />Muen<ref>{{cite web|author=Muen SK |url=https://muen.codelabs.ch/ |title=Muen &#124; SK for x86/64 |publisher=Muen.codelabs.ch |access-date=2019-01-28}}</ref> [[separation kernel]]
|-
| 2014–01 || || || [[FreeBSD]] 10.0 || [[Linux kernel|Linux]] 3.13 ||
|-
| 2014–02 || || || || || [[ReactOS]] 0.3.16<br />[[MorphOS]] 3.5
|-
| 2014–03 || || [[iOS 7]].1 || || [[Linux kernel|Linux]] 3.14 ||
|-
| 2014–04 ||[[Windows Phone 8.1]]|| || || [[Ubuntu 14.04]] (LTS) || [[Solaris (operating system)|Solaris]] 11.2
|-
| 2014–05 || || || [[OpenBSD]] 5.5 || ||
|-
| 2014–06 || || || [[DragonFly BSD]] 3.8 || [[Linux kernel|Linux]] 3.15<br />[[Red Hat Enterprise Linux#RHEL 7|Red Hat Enterprise Linux 7]]|| [[MorphOS]] 3.6
|-
| 2014–07 || || || || ||
|-
| 2014–08 || || || || [[Linux kernel|Linux]] 3.16 || [[MorphOS]] 3.7
|-
| 2014–09 || || [[iOS 8]] || || || [[Minix]] 3.3
|-
| 2014–10 || || [[OS X Yosemite]] (v10.10)<br />[[iOS 8]].1 || ||[[Ubuntu 14.10]]<br />[[Linux kernel|Linux]] 3.17 ||
|-
| 2014–11 || || || [[OpenBSD]] 5.6<br />[[FreeBSD]] 10.1<br />[[DragonFly BSD]] 4.0 || [[openSUSE]] 13.2<br />[[Android (operating system)|Android]] 5.0 || [[IBM i]] 7.2<br />[[ReactOS]] 0.3.17
|-
| 2014–12 || || || || [[Linux kernel|Linux]] 3.18<br />[[Fedora Linux]] 21 ||
|-
| 2015–01 || || || || ||
|-
| 2015–02 || || || || [[Linux kernel|Linux]] 3.19 ||
|-
| 2015–03 || || [[iOS 8]].2 || || ||
|-
| 2015–04 || || [[iOS 8]].3<br />[[watchOS 1]] || || [[Linux kernel|Linux]] 4.0<br />[[Debian]] 8.0<br />[[Ubuntu 15.04]] || [[Redox (operating system)|Redox OS]]
|-
| 2015–05 || || || || [[Fedora Linux]] 22 || [[BS2000|BS2000/OSD]] 10.0
|-
| 2015–06 || || [[iOS 8]].4 || || [[Linux kernel|Linux]] 4.1 || [[MorphOS]] 3.9
|-
| 2015–07 || [[Windows 10]] ([[Windows 10 (original release)|1507]]) || || || ||
|-
| 2015–08 || || || |[[FreeBSD]] 10.2 || [[Linux kernel|Linux]] 4.2 ||
|-
| 2015–09 || || [[OS X El Capitan]] (v10.11)<br />[[iOS 9]]<br />[[WatchOS#watchOS 2.x|watchOS 2]] || [[NetBSD]] 7.0 || || [[z/OS]] Version 2.2<ref>{{cite web|url=http://www-01.ibm.com/common/ssi/cgi-bin/ssialias?subtype=ca&infotype=an&supplier=897&letternum=ENUS215-267#availx |title=IBM z/OS Version 2 Release 2 Announcement Letter | date=28 July 2015 | access-date=2015-08-23}}</ref>
|-
| 2015–10 || || [[iOS 9]].1<br />[[tvOS]]9 || || [[Android (operating system)|Android]] 6.0<br />[[Ubuntu 15.10]] ||[[IBM AIX|AIX]] 7.2<ref>{{cite web|url=http://www-01.ibm.com/common/ssi/cgi-bin/ssialias?infotype=AN&subtype=CA&htmlfid=897/ENUS215-393&appname=USN |title=IBM AIX 7.2 delivers the reliability, availability, performance, and security needed to be successful in the new global economy |date=October 5, 2015 |publisher=01.ibm.com |access-date=2019-01-28}}</ref><br />[[Solaris 11]].3<ref>{{cite web|url=https://docs.oracle.com/cd/E53394_01/html/E54847/index.html |title=What's New in Oracle® Solaris 11.3 |publisher=Docs.oracle.com |date=2017-10-03 |access-date=2019-01-28}}</ref>
|-
| 2015–11 || [[Windows 10]] November Update ([[Windows 10 version history (version 1511)|1511]])<br />[[Windows 10 Mobile]] ([[Windows 10 version history (version 1511)|1511]])|| [[tvOS]]9.1 || || [[Linux kernel|Linux]] 4.3<br />[[Fedora Linux]] 23<br />[[openSUSE]] Leap 42.1 ||
|-
| 2015–12 || || [[iOS 9]].2<br />[[WatchOS#watchOS 2.x|watchOS 2.1]]<br />[[tvOS]]9.2 || || ||
|-
| 2016–01 || || || || [[Linux kernel|Linux]] 4.4 || [[Minix]] 3.4
|-
| 2016–02 || || || || ||[[ReactOS]] 0.4
|-
| 2016–03 || || [[iOS 9]].3<br />[[WatchOS#watchOS 2.x|watchOS 2.2]]<br />[[tvOS]]9.3 || [[OpenBSD]] 5.9<br />[[FreeBSD]] 10.3 || [[Linux kernel|Linux]] 4.5 ||
|-
| 2016–04 || || || || [[Ubuntu 16.04]] || [[IBM i]] 7.3<br />[[ReactOS]] 0.4.1
|-
| 2016–05 || || || ||[[Linux kernel|Linux]] 4.6||
|-
| 2016–06 || || || || [[Slackware]] 14.2<br />[[Fedora Linux]] 24<br />[[Linux Mint]] 18 || 
|-
| 2016–07 || || || || [[Linux kernel|Linux]] 4.7 ||
|-
| 2016–08 || [[Windows 10]] Anniversary Update ([[Windows 10 version history (version 1607)|1607]])<br />[[Windows 10 Mobile]] Anniversary Update ([[Windows 10 version history (version 1607)|1607]]) || || [[DragonFly BSD]] 4.6 || [[Android (operating system)|Android]] 7.0 || [[ReactOS]] 0.4.2
|-
| 2016–09 || [[Windows Server 2016]] (1607) || [[macOS Sierra]] (v10.12)<br />[[iOS 10]]<br />[[WatchOS#watchOS 3.x|watchOS 3]]<br />[[tvOS]]10 || [[OpenBSD]] 6.0 || [[Linux kernel|Linux]] 4.8||
|-
| 2016–10 || || [[iOS 10]].1<br />[[WatchOS#watchOS 3.x|watchOS 3.1]] ||[[NetBSD]] 7.0.2<br />[[FreeBSD]] 11.0 ||[[Android (operating system)|Android]] 7.1<br />[[Ubuntu 16.10]] ||
|-
| 2016–11 || || || || [[Oracle Linux]] 7.3<br />[[Fedora Linux]] 25<br />[[openSUSE]] Leap 42.2 || [[ReactOS]] 0.4.3
|-
| 2016–12 || || [[iOS 10]].2<br />[[tvOS]]10.1 || || [[Linux kernel|Linux]] 4.9<br />[[Linux Mint]] 18.1 || [[FreeDOS]] 1.2
|-
| 2017–01 || || || || ||
|-
| 2017–02 || || || || [[Linux kernel|Linux]] 4.10 || [[ReactOS]] 0.4.4
|-
| 2017–03 || || [[iOS 10]].3<br />[[WatchOS#watchOS 3.x|watchOS 3.2]]<br />[[tvOS]]10.2 || [[DragonFly BSD]] 4.8<br />[[NetBSD]] 7.1 || ||
|-
| 2017–04 || [[Windows 10]] Creators Update ([[Windows 10 version history (version 1703)|1703]])<br />[[Windows 10 Mobile]] Creators Update ([[Windows 10 version history (version 1703)|1703]]) || || [[OpenBSD]] 6.1 || [[Linux kernel|Linux]] 4.11<br />[[Ubuntu 17.04]] ||
|-
| 2017–05 || || || || || [[ReactOS]] 0.4.5<br />[[ArcaOS]] 5.0.0
|-
| 2017–06 || || || || [[Debian]] 9.0<br />[[Fedora Linux]] 26
|
|-
| 2017–07 || || || || [[Linux kernel|Linux]] 4.12<br />[[openSUSE]] Leap 42.3 || [[BS2000|BS2000/OSD]] 11.0<br />[[ArcaOS]] 5.0.1
|-
| 2017–08 || || || || [[Android (operating system)|Android]] 8.0 ||
|-
| 2017–09 || || [[macOS High Sierra]] (v10.13)<br />[[iOS 11]]<br />[[WatchOS#watchOS 4.x|watchOS 4]]<br />[[tvOS]]11 || || [[Linux kernel|Linux]] 4.13 || [[ReactOS]] 0.4.6
|-
| 2017–10 || [[Windows 10]] Fall Creators Update ([[Windows 10 version history (version 1709)|1709]])<br />[[Windows 10 Mobile]] Fall Creators Update ([[Windows 10 version history (version 1709)|1709]])<br />[[Windows Server 2016]] Fall Creators Update ([[Windows 10 version history (version 1709)|1709]]) || [[iOS 11]].1<br />[[WatchOS#watchOS 4.x|watchOS 4.1]]<br />[[tvOS]]11.1 || [[OpenBSD]] 6.2<br />[[DragonFly BSD]] 5.0 || [[Ubuntu 17.10]] ||
|-
| 2017–11 || || || || [[Linux kernel|Linux]] 4.14<br />[[Fedora Linux]] 27 || [[BareMetal]] 1.0.0
|-
| 2017–12 || || [[iOS 11]].2<br />[[WatchOS#watchOS 4.x|watchOS 4.2]]<br />[[tvOS]]11.2 || || [[Android (operating system)|Android]] 8.1 || [[ReactOS]] 0.4.7
|-
| 2018–01 || || || || [[Linux kernel|Linux]] 4.15 ||
|-
| 2018–02 || || || || || [[ArcaOS]] 5.0.2
|-
| 2018–03 || || [[iOS 11]].3<br />[[WatchOS#watchOS 4.x|watchOS 4.3]]<br />[[tvOS]]11.3 || [[NetBSD]] 7.1.2 || || [[Genode]] Sculpt EA
|-
| 2018–04 || [[Windows 10]] April 2018 Update ([[Windows 10 version history (version 1803)|1803]]) || || [[OpenBSD]] 6.3<br />[[DragonFly BSD]] 5.2 || [[Linux kernel|Linux]] 4.16<br />[[Ubuntu 18.04]] (LTS) || [[ReactOS]] 0.4.8
|-
| 2018–05 || || [[iOS 11]].4<br />[[tvOS]]11.4 || ||[[Fedora Linux]] 28<br />[[openSUSE]] Leap 15.0 ||
|-
| 2018–06 || || || || [[Linux kernel|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 kernel|Linux]] 4.18<br />[[Android (operating system)|Android]] 9.0 || [[ArcaOS]] 5.0.3<br />[[Solaris 11]].4
|-
| 2018–09 || || [[macOS Mojave]] (v10.14)<br />[[iOS 12]]<br />[[WatchOS#watchOS 5.x|watchOS 5]]<br />[[tvOS]]12 || || || [[Genode]] Sculpt VC<ref>{{Cite web|url=https://genode.org/news/sculpt-with-visual-composition|title=Genode - Genode News|website=genode.org}}</ref>
|-
| 2018–10
| [[Windows 10]] October 2018 Update ([[Windows 10 version history (version 1809)|1809]])<br />[[Windows Server 2019]] ([[Windows 10 version history (version 1809)|1809]])
| [[iOS 12]].1<br />[[WatchOS#watchOS 5.x|watchOS 5]].1<br />[[tvOS]]12.1
| [[OpenBSD]] 6.4
| [[Linux kernel|Linux]] 4.19<br />[[Ubuntu 18.10]]<br />[[Fedora Linux]] 29
| [[SerenityOS]]
|-
| 2018–11
|
|
|
|
| [[ReactOS]] 0.4.10
|-
| 2018–12
|
|
| [[DragonFly BSD]] 5.4<br />[[FreeBSD]] 12.0
| [[Linux kernel|Linux]] 4.20
|
|-
| 2019–01
|
|
|
|
|
|-
| 2019–02
|
|
|
|
|
|-
| 2019–03
|
| [[iOS 12]].2<br />[[WatchOS#watchOS 5.x|watchOS 5]].2<br />[[tvOS]]12.2
|
| [[Linux kernel|Linux]] 5.0
| [[ReactOS]] 0.4.11
|-
| 2019–04
|
|
|
| [[Ubuntu 19.04]]<br />[[Fedora Linux]] 30
|
|-
| 2019–05
| [[Windows 10]] May 2019 Update ([[Windows 10 version history (version 1903)|1903]])
| [[iOS 12]].3<br />[[tvOS]]12.3
| [[OpenBSD]] 6.5
[[NetBSD]] 8.1
| [[Linux kernel|Linux]] 5.1<br />[[Red Hat Enterprise Linux]] 8<br />[[openSUSE]] Leap 15.1
|
|-
| 2019–06
|
|
| [[DragonFly BSD]] 5.6
| [[SUSE Linux Enterprise]] 15 SP1
| [[IBM i]] 7.4
|-
| 2019–07
|
| [[iOS 12]].4<br />[[WatchOS#watchOS 5.x|watchOS 5]].3<br />[[tvOS]]12.4
|
| [[Debian]] 10.0<br />[[Linux kernel|Linux]] 5.2
| [[ArcaOS]] 5.0.4
|-
| 2019–08
|
|
|
|
|
|-
| 2019–09
|
| [[iOS 13]]<br />[[iOS 13]].1<br />[[iPadOS 13]].1<br />[[WatchOS#watchOS 6.x|watchOS 6]]<br />[[tvOS]]13
|
| [[Linux kernel|Linux]] 5.3<br />[[Android (operating system)|Android]] 10.0
| [[ReactOS]] 0.4.12
|-
| 2019–10
|
| [[iOS 13]].2<br />[[iPadOS 13]].2<br />[[WatchOS#watchOS 6.x|watchOS 6]].1<br />[[macOS Catalina]] (v10.15)
|[[OpenBSD]] 6.6
| [[Ubuntu 19.10]]<br />[[Fedora Linux]] 31
|
|-
| 2019–11
| [[Windows 10]] November 2019 Update ([[Windows 10 version history (version 1909)|1909]])
|
|[[FreeBSD]] 12.1
|[[Linux kernel|Linux]] 5.4
|
|-
| 2019–12
|
| [[iOS 13]].3<br />[[iPadOS 13]].3
|
|
|
|}

==2020s==
{{Further|Timeline of free and open-source software}}
{| class="wikitable sortable"
|-
! Year–month || [[Microsoft Windows|Windows]] || [[Apple Inc.|Apple]] || [[Berkeley Software Distribution|BSD]] || [[Linux]] || Others
|-
| 2020–01
|
|
|
| [[Linux kernel|Linux]] 5.5
|Rrrrrt
|-
| 2020–02
|
|
| [[NetBSD]] 9.0
|
|
|-
| 2020–03
|
| [[iOS 13]].4<br />[[iPadOS 13]].4<br />[[WatchOS#watchOS 6.x|watchOS 6]].2<br />[[tvOS]]13.4
| [[DragonFly BSD]] 5.8
| [[Linux kernel|Linux]] 5.6
|
|-
| 2020–04
|
|
|
| [[Ubuntu 20.04]]<br />[[Fedora Linux]] 32
| [[ReactOS]] 0.4.13
|-
| 2020–05
| [[Windows 10]] May 2020 Update ([[Windows 10 version history (version 2004)|2004]])
| [[iOS 13]].5<br />[[iPadOS 13]].5
| [[OpenBSD]] 6.7
|
| [[OpenVMS]] 9.0
|-
| 2020–06
|
|
|
| [[Linux kernel|Linux]] 5.7
| [[ArcaOS]] 5.0.5<br />[[Haiku (operating system)|Haiku]] R1/beta2
|-
| 2020–07
|
| [[iOS 13]].6<br />[[iPadOS 13]].6
|
|
|
|-
| 2020–08
|
|
|
| [[Linux kernel|Linux]] 5.8
| [[ArcaOS]] 5.0.6
|-
| 2020–09
|
| [[iOS 13]].7<br />[[iPadOS 13]].7<br />[[iOS 14]]<br />[[iPadOS 14]].0<br />[[WatchOS#watchOS 7.x|watchOS 7]].0<br />[[tvOS]]14.0
|
| [[Android 11]]
|
|-
| 2020–10
| [[Windows 10]] October 2020 Update ([[Windows 10 20H2|20H2]])
| [[iOS 14]].1<br />[[iPadOS 14]].1
| [[NetBSD]] 9.1<br />[[OpenBSD]] 6.8<br />[[FreeBSD]] 12.2
| [[Linux kernel|Linux]] 5.9<br />[[Fedora Linux]] 33<br />[[Ubuntu 20.10]]
|
|-
| 2020–11
|
| [[macOS Big Sur]] (v11.0)<br />[[iOS 14]].2<br />[[iPadOS 14]].2<br />[[WatchOS#watchOS 7.x|watchOS 7]].1<br />[[tvOS]]14.2
|
|
|
|-
| 2020–12
|
| [[macOS Big Sur]] (v11.1)<br />[[iOS 12]].5<br />[[iOS 14]].3<br />[[iPadOS 14]].3<br />[[WatchOS#watchOS 6.x|watchOS 6]].3<br />[[WatchOS#watchOS 7.x|watchOS 7]].2<br />[[tvOS]]14.3
|
| [[Linux kernel|Linux]] 5.10
|
|-
| 2021–01
|
| [[iOS 14]].4<br />[[iPadOS 14]].4<br />[[WatchOS#watchOS 7.x|watchOS 7]].3<br />[[tvOS]]14.4
|
|
|
|-
| 2021–02
|
| [[macOS Big Sur]] (v11.2)
|
|
|
|-
| 2021–03
|
|
|
|
|
|-
| 2021–04
|
| [[macOS Big Sur]] (v11.3)<br />[[iOS 14]].5<br />[[iPadOS 14]].5<br />[[WatchOS#watchOS 7.x|watchOS 7]].4<br />[[tvOS]]14.5
| [[FreeBSD]] 13.0
| [[Fedora Linux]] 34
|
|-
| 2021-05
| [[Windows 10]] May 2021 Update ([[Windows 10 21H1|21H1]])
| [[macOS Big Sur]] (v11.4)<br />[[iOS 14]].6<br />[[iPadOS 14]].6<br />[[WatchOS#watchOS 7.x|watchOS 7]].5<br />[[tvOS]]14.6
| [[OpenBSD]] 6.9<br />[[DragonFly BSD]] 6.0<br />[[NetBSD]] 9.2
| [[Linux kernel|Linux]] 5.12<br />[[Ubuntu 21.04]]
|
|-
| 2021-06
|
|
|
| [[Rocky Linux]] 8<br />[[Linux kernel|Linux]] 5.13
|
|-
| 2021-07
|
| [[macOS Big Sur]] (v11.5)<br />[[iOS 14]].7<br />[[iPadOS 14]].7<br />[[WatchOS#watchOS 7.x|watchOS 7]].6<br />[[tvOS]]14.7
|
|
| [[Haiku (operating system)|Haiku]] R1/beta3
|-
| 2021-08
| [[Windows Server 2022]]
|
|
| [[Linux kernel|Linux]] 5.14<br />[[Debian]] 11.0
|
|-
| 2021-09
|
| [[macOS Big Sur]] (v11.6)<br />[[iOS 14]].8<br />[[iPadOS 14]].8<br />[[iOS 15]]<br />[[iPadOS 15]].0<br />[[WatchOS#watchOS 8.x|watchOS 8]].0<br />[[tvOS]]15.0
|
|
|-
| 2021-10
| [[Windows 11]]
| [[macOS Monterey]] (v12.0)<br />[[iOS 15]].1<br />[[iPadOS 15]].1<br />[[WatchOS#watchOS 8.x|watchOS 8]].1<br />[[tvOS]]15.1
| [[OpenBSD]] 7.0
| [[Android 12]]<br />[[Ubuntu 21.10]]
|
|-
| 2021-11
| [[Windows 10]] November 2021 Update ([[Windows 10 21H2|21H2]])
|
|
|
|-
| 2021-12
|
| [[macOS Monterey]] (v12.2)<br />[[iOS 15]].2<br />[[iPadOS 15]].2<br />[[WatchOS#watchOS 8.x|watchOS 8]].3<br />[[tvOS]]15.2
|
|
| [[ArcaOS]] 5.0.7<br />[[ReactOS]] 0.4.14
|-
| 2022-01
|
| [[iOS 15]].3<br />[[iPadOS 15]].3<br />[[WatchOS#watchOS 8.x|watchOS 8]].4<br />[[tvOS]]15.3
|
|
|
|-
| 2022-02
|
|
|
| [[Slackware]] 15.0
|
|-
| 2022-03
|
| [[macOS Monterey]] (v12.3)<br />[[iOS 15]].4<br />[[iPadOS 15]].4<br />[[WatchOS#watchOS 8.x|watchOS 8]].5<br />[[tvOS]]15.4
|
| [[Android 12L]]
|
|-
| 2022-04
|
|
| [[OpenBSD]] 7.1
| [[Ubuntu 22.04]]
|
|-
| 2022-05
|
| [[macOS Monterey]] (v12.4)<br />[[iOS 15]].5<br />[[iPadOS 15]].5<br />[[WatchOS#watchOS 8.x|watchOS 8]].6<br />[[tvOS]]15.5
|
|
| [[IBM i]] 7.5
|-
| 2022-06
|
|
|
|
|
|-
| 2022-07
|
| [[macOS Monterey]] (v12.5)<br />[[iOS 15]].6<br />[[iPadOS 15]].6<br />[[WatchOS#watchOS 8.x|watchOS 8]].7<br />[[tvOS]]15.6
|
|
|
|-
| 2022-08
|
|
|
| [[Android 13]]
|
|-
| 2022-09
| [[Windows 11]] 2022 Update ([[Windows 11 22H2|22H2]])
| [[macOS Big Sur]] (v11.7)<br />[[macOS Monterey]] (v12.6)<br />[[iOS 15]].7<br />[[iPadOS 15]].7<br />[[iOS 16]]<br />[[WatchOS#watchOS 9.x|watchOS 9]].0<br />[[tvOS]]16.0
|
|
|
|-
| 2022-10
|
| [[macOS Ventura]] (13.0)<br />[[iOS 16]].1<br />[[iPadOS 16]].0
| [[OpenBSD]] 7.2
| [[Ubuntu 22.10]]
|
|-
| 2022-11
|
| [[macOS Ventura]] (13.0.1)<br />[[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 kernel|Linux]] 6.5
| [[ArcaOS]] 5.1.0
|-
| 2023-09
|
| [[macOS Sonoma]] (14.0)<br />[[iOS 17]].0<br />[[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 ([[Windows 11, version 24H2|24H2]])
|[[iOS 18]].1
|
|[[Android 15]]
|
|-
|2024-11
|
|
|
|
|
|-
|2024-12
|
|
|
|
|
|}

==See also==
* [[Comparison of operating systems]]
* [[List of operating systems]]
* [[Comparison of real-time operating systems]]
* [[Timeline of DOS operating systems]]
* [[:File:Gldt1009.svg|Timeline of Linux distributions (Diagram 1992–2010)]]

==References==
{{Reflist}}

==External links==
* [http://www.levenez.com/unix/ UNIX History] – a timeline of [[Unix|UNIX]] 1969 and its descendants at present
* [http://bravotech.us/info/msos-timeline.htm Concise Microsoft O.S. Timeline] – a color-coded concise timeline for various Microsoft operating systems (1981–present)
*[http://www.bitsavers.org/ Bitsavers] – an effort to capture, salvage, and archive historical computer software and manuals from minicomputers and mainframes of the 1950s, 1960s, 1970s, and 1980s
* [http://www.cs.uiowa.edu/~jones/opsys/notes/03.shtml A brief history of operating systems]
* [http://www.guidebookgallery.org/timelines/windows Microsoft operating system time-line]

{{Operating system}}
{{Timelines of computing}}

[[Category:Operating systems|*Timeline of operating systems]]
[[Category:Computing timelines|Operating systems]]
[[Category:Real-time operating systems|Real-time operating systems]]
[[Category:Embedded operating systems|Embedded operating systems]]