TIMESHARING SYSTEMS
This section lists operating systems for large and medium computers primarily
oriented to interactive timesharing use. Although some of these systems
also support batch processing and occasionally real-time activities, these
are considered secondary uses. Very early timesharing systems are included
here. Multiuser small computer systems, supporting only a few users, are
not included; these are listed in the sections on minicomputer and microcomputer
OSs. UNIX and its variants have their own category.
- 2000E & 2000F
- Timesharing operating systems for the HP 2100. Early 1970s [Datapro
1974].
- BTM
- Batch Time-Sharing Monitor for XDS Sigma 5/7. Late 1960s [Sayres 1971].
- CMAS
- Cambridge Multiple Access System. University of Cambridge (England).
Late 1960s [Wilkes 1973].
- CTSS
- The Compatible Time Sharing System. Early Timesharing OS developed
at MIT for a modified IBM 7090. Early 1960's [Crisman et al 1964].
- DTSS
- Dartmouth Time-Sharing System. Timesharing with the BASIC language
for liberal arts students, on a novel 2-computer system (GE-235 + Datanet
30). Mid 1960s [Kemeny & Kurtz 1968].
- JOSS
- JOHNNIAC Open Shop System. An early on-line computing system for the
JOHNNIAC computer. Early 1960s [Shaw 1964].
- KOS
- Kent On-Line System, Kent Univ. England, Late 1960s [Brown 1971].
- KRONOS
- Timesharing OS for CDC 6000 and CYBER computers. Successor to SCOPE.
Control Data Corp., Early 1970s [Atwood 1976].
- LTSS
- Lawrence Timesharing System. Early Timesharing OS at Lawrence Livermore
Laboratories. [Sutherland et al 1971].
- MACE
- Original name for CDC KRONOS OS.
- MCTS
- Multiple Console Time Sharing System developed to support CAD applications
at General Motors. Early 1970s [Brown et al 1975].
- MDOS
- Operating System for the Data General MV4000. Early 1980s [Computerworld
1984].
- MINIMOP
- Multi-Access OS. Late 1960s [Rees 1971].
- MTS
- Michigan Terminal System. Late 1960s. [Boettner & Alexander 1975].
- MULTICS
- The MULTiplexed Information and Computing Service. A timesharing system
featuring novel techniques for memory management and respource protection.
Developed by M.I.T., Bell Labs, & G.E. for the GE645. Later developed
by Honeywell. Late 1960s [Corbato & Vyssotsky 1965, Organick 1972].
- NOS
- OS for CDC Cyber Computers. Based on KRONOS.
- OS-3
- Oregon State Open Shop OS. A timesharing system for the CDC 3300. Late
1960s [Meeker et al 1969].
- Pitt Time Sharing System
- An early Timesharing system developed at the University of Pittsburgh
for the IBM S/360. Late 1960s [Badger & Johnson 1968].
- PTSS
- People's Time Sharing System. A time sharing system for the CDC 6600
at Lawrence Berkeley Laboratories, based on BKY. Early 1970s [Tanenbaum
& Benson 1973].
- Tenex
- A Timesharing System for a modified PDP-10. Based partially on abstract
machine concepts. Early 1970's. [Bobrow et al 1972].
- TOPS-10
- Total Operating System. Timesharing OS for DEC PDP-10. Digital Equipment
Corp. Late 1960s [Bell et al 1978].
- TOPS-20
- Improved version of TOPS-10 for the DECSystem 20, also using concepts
from TENEX. Early 1970s [Bell et al 1978].
- TSM
- Time Sharing Monitor. Early timesharing OS developed by IBM for the
7090. Early 1960s [Kinslow 1964].
- TSOS
- Early name for Univac VMOS.
- TSOS
- Time Sharing OS for RCA Spectra 70/46. Mid 1960s [Weizer 1981].
- TS8/E
- Timesharing OS for the DEC PDP-8. Late 1970s [Datapro 1974].
- TSS
- An early timesharing system for the AN/FSQ-32. Early 1960s [Schwartz
et al 1964].
- TSS
- Timesharing OS for General Automation System 18/30. Early 1970s [Datapro
1974].
- TSS/8
- Experimental timesharing OS for a modified PDP-8, developed at Carnegie-Mellon
Univ. Late 1960s [van de Goor et al 1969, Sayres 1971].
- TSS/360
- Timesharing OS developed by IBM for the S/360. Mid 1960s [Lett &
Konigsford 1968, Katzan 1986].
- UTS
- Time Sharing Operating System for Xerox Data Systems SIGMA computers.
Early 1970s.
- VAX/VMS
- Standard operating system for DEC VAX. Based on RSX-11. Late 1970s
[Kenah & Bate 1984].
- VMOS
- Timesharing OS for the RCA Spectra 70. Late 1960s [Fogel 1974, Weizer
1981].
- VMS
- Standard OS for Digital Equipment Corp. VAX. See VAX/VMS.
- VS/9
- Operating System for the Univac Series 90. Derived from VMOS. Early
1970s.