Editing Timeline of operating systems (section)

==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]]