Editing Time-sharing (section)

==Notable time-sharing systems==
{{See also|Time-sharing system evolution}}
Significant early timesharing systems:<ref name=Auerbach/>
* [[Allen-Babcock]] RUSH (Remote Users of Shared Hardware) Time-sharing System on [[IBM S/360]] hardware (1966)<ref>{{cite book |doi=10.1145/1465482.1465528 |chapter=A brief description of privacy measures in the RUSH time-sharing system |title=Proceedings of the April 18-20, 1967, spring joint computer conference on - AFIPS '67 (Spring) |date=1967 |last1=Babcock |first1=J. D. |page=301 }}</ref> → [[Tymshare]]
* [[AT&T Corporation|AT&T]] [[Bell Labs]] [[Unix]] (1971) → [[University of California, Berkeley|UC Berkeley]] [[Berkeley Software Distribution|BSD Unix]] (1977)
* [[BBN Technologies|BBN]] [[PDP-1]] Time-sharing System → [[Massachusetts General Hospital]] PDP-1D → [[MUMPS]]
* [[BBN Technologies|BBN]] [[TENEX (operating system)|TENEX]] → [[Digital Equipment Corporation|DEC]] [[TOPS-20]], Foonly FOONEX, MAXC OS at [[PARC (company)|PARC]], [[Stanford University|Stanford]] Low Overhead TimeSharing (LOTS), which ran [[TOPS-20]]
* [[Berkeley Timesharing System]] at [[University of California, Berkeley|UC Berkeley]] [[Project Genie]] → [[Scientific Data Systems]] [[SDS 940]] ([[Tymshare]], [[BBN Technologies|BBN]], [[Stanford Research Institute|SRI]], Community Memory) → BCC 500 → MAXC at PARC
* [[Burroughs Corporation|Burroughs]] Time-sharing [[Burroughs MCP|MCP]] → [[HP 3000]] MPE
* Cambridge Multiple Access System was developed for the [[Titan (1963 computer)|Titan]], the prototype [[Atlas (computer)|Atlas]] 2 computer built by [[Ferranti]] for the [[University of Cambridge]].<ref>{{Citation | last = Hartley | first = D. F. | author-link = David Hartley (computer scientist) | title = The Cambridge multiple-access system: user's reference manual | place = Cambridge | publisher = Cambridge Univ. Press | year = 1968 | isbn = 978-0901224002 }}</ref> This was the first time-sharing system developed outside the United States, and which influenced the later development of [[UNIX]].
* Compower Ltd., a wholly owned subsidiary of the National Coal Board (later British Coal Corporation) in the UK. Originally National Coal Board (NCB) Computer Services, it became Compower in 1973 providing computing and time-share services to internal NCB users and as a commercial service to external users. Sold to Philips C&P (Communications and Processing) in August 1994.
* [[CompuServe]], also branded as Compu-Serv, CIS.
* Compu-Time, Inc.,<ref name=Auerbach/> on [[Honeywell]] 400/4000, started in 1968 in Ft Lauderdale, Florida, moved to Daytona Beach in 1970.
* [[Control Data Corporation|CDC]] MACE, APEX → [[CDC Kronos|Kronos]] → [[NOS (operating system)|NOS]] → [[NOS/VE]]
* [[Dartmouth Time-Sharing System]] (DTSS) → GE Time-sharing → [[GEnie]]
* [[Digital Equipment Corporation|DEC]] [[PDP-6]] Time-sharing Monitor → [[TOPS-10]] → [[BBN Technologies|BBN]] TENEX → [[Digital Equipment Corporation|DEC]] [[TOPS-20]]
* [[Digital Equipment Corporation|DEC]] [[TSS/8]] → [[RSTS/E|RSTS-11]], [[RSX-11]] → [[OpenVMS]]
* [[KDF9|English Electric KDF9]] COTAN (Culham Online Task Activation Network)
* [[Hewlett-Packard|HP]] [[HP Time-Shared BASIC|2000 Time-Shared BASIC]]
* [[Hewlett-Packard|HP]] [[HP 3000|3000 series]]
* [[IBM]] [[List of IBM products#Services|CALL/360]], CALL/OS - using [[IBM System/360 Model 50]]
* [[IBM CP-40]] → [[CP-67]] → [[CP-370]] → [[CP/CMS]] → [[VM/CMS]]
* [[IBM]] [[Time Sharing Option|TSO]] for [[OS/MVT]] → for [[OS/VS2 (SVS)|OS/VS2]] → for [[MVS]] → for [[z/OS]]
* [[IBM]] [[TSS/360]] → TSS/370
* [[ICT 1900 series]] [[GEORGE 3]] MOP (Multiple Online Programming)
* International Timesharing Corporation on dual [[CDC 3000|CDC 3300]] systems.<ref name=Auerbach/>
* Linux: see how it evolved from MIT CTSS
* [[Massachusetts Institute of Technology|MIT]] [[Compatible Time-Sharing System|CTSS]] → [[MULTICS]] (MIT / [[General Electric|GE]] / Bell Labs) → [[Unix]] → [[Linux]]
* [[Massachusetts Institute of Technology|MIT]] Time-sharing System for the [[Digital Equipment Corporation|DEC]] [[PDP-1]] → [[Incompatible Timesharing System|ITS]]
* [[McGill University]] MUSIC → IBM [[MUSIC/SP]]
* [[Michigan Terminal System]], on the [[IBM System/360 Model 67|IBM S/360-67]], [[S/370]], and successors.
* [[Michigan State University]] [[CDC SCOPE (software)|CDC SCOPE]]/HUSTLER System
* [[National CSS]] [[VP/CSS]], on [[IBM 360]] series; originally based on IBM's [[CP/CMS]].
* [[Oregon State University]] OS-3, on [[CDC 3000]] series.
* [[Prime Computer]] [[PRIMOS]]
* [[RAND]] [[JOSS]] → JOSS-2 → JOSS-3
* [[RCA]] [[Time Sharing Operating System|TSOS]] → [[UNIVAC|Univac]] / [[Unisys]] VMOS → [[VS/9]]
* [[Service in Informatics and Analysis|Service in Informatics and Analysis (SIA)]], on [[CDC 6600]] [[CDC Kronos|Kronos]].
* [[System Development Corporation]] Time-sharing System, on the [[AN/FSQ-32]].
* [[Stanford University|Stanford]] [[ORVYL and WYLBUR]], on [[IBM System/360 Model 67|IBM S/360-67]].
* [[Stanford University|Stanford]] [[PDP-1]] Time-sharing System → [[Stanford Artificial Intelligence Laboratory|SAIL]] → [[WAITS]]
* [[Time Sharing Limited | Time Sharing Ltd.]] (TSL)<ref>[http://www.jamesmiller.com/timesharing001.html "Time Sharing"], James Miller. Retrieved 30 November 2013.</ref> on [[Digital Equipment Corporation|DEC]] [[PDP-10]] systems → [[Automatic Data Processing]] (ADP), first commercial time-sharing system in Europe and first dual (fault tolerant) time-sharing system.
* [[OS/VS1#TONE for VS1|Tone]] (TSO-like, for [[OS/VS1|VS1]]), a non-IBM Time-sharing product, marketed by Tone Software Co; TSO required VS2.
* [[Tymshare]] SDS-940 → Tymcom X → Tymcom XX
* [[Unisys]]/[[UNIVAC 1108]] [[EXEC 8]] → OS 1100 → [[OS 2200]]
* [[University of California, Berkeley|UC Berkeley]] CAL-TSS, on [[CDC 6000 series|CDC 6400]].
* [[Scientific Data Systems|XDS]] [[Universal Time-Sharing System|UTS]] → [[CP-V operating system|CP-V]] → [[Honeywell CP-6]]