Editing List of operating systems (section)

===Digital Research, Inc.===
* [[CP/M]]
** [[CP/M]] CP/M for [[Intel 8080]]/[[Intel 8085|8085]] and [[Zilog Z80]]
*** [[Personal CP/M]], a refinement of CP/M
*** [[CP/M Plus]] with BDOS 3.0
** [[CP/M-68K]] CP/M for [[Motorola 68000]]
** [[CP/M-8000]] CP/M for [[Zilog Z8000]]
** [[CP/M-86]] CP/M for [[Intel 8088]]/[[Intel 8086|8086]]
*** [[CP/M-86 Plus]]
*** [[Personal CP/M-86]]
** [[MP/M]] Multi-user version of CP/M-80
*** [[MP/M II]]
** [[MP/M-86]] Multi-user version of CP/M-86
*** [[MP/M 8-16]], a dual-processor variant of MP/M for 8086 and 8080 CPUs.
** [[Concurrent CP/M]], the successor of CP/M-80 and MP/M-80
** [[Concurrent CP/M-86]], the successor of CP/M-86 and MP/M-86
*** [[Concurrent CP/M 8-16]], a dual-processor variant of Concurrent CP/M for 8086 and 8080 CPUs.
** [[Concurrent CP/M-68K]], a variant for the 68000
* [[DOS]]
** [[Concurrent DOS]], the successor of Concurrent CP/M-86 with PC-MODE
*** [[Concurrent PC DOS]], a Concurrent DOS variant for IBM compatible PCs
*** [[Concurrent DOS 8-16]], a dual-processor variant of Concurrent DOS for 8086 and 8080 CPUs
*** [[Concurrent DOS 286]]
*** [[Concurrent DOS XM]], a real-mode variant of Concurrent DOS with EEMS support
*** [[Concurrent DOS 386]]
**** [[Concurrent DOS 386/MGE]], a Concurrent DOS 386 variant with advanced graphics terminal capabilities
** [[Concurrent DOS 68K]], a port of Concurrent DOS to Motorola 68000 CPUs with DOS source code portability capabilities
** [[FlexOS]] 1.0 – 2.34, a derivative of Concurrent DOS 286
*** [[FlexOS 186]], a variant of FlexOS for terminals
*** [[FlexOS 286]], a variant of FlexOS for hosts
**** [[Siemens S5-DOS/MT]], an industrial control system based on FlexOS
**** [[IBM 4680 OS]], a [[point of sale|POS]] operating system based on FlexOS
**** [[IBM 4690 OS]], a POS operating system based on FlexOS
***** [[Toshiba 4690 OS]], a POS operating system based on IBM 4690 OS and FlexOS
*** [[FlexOS 386]], a later variant of FlexOS for hosts
**** [[IBM 4690 OS]], a POS operating system based on FlexOS
***** [[Toshiba 4690 OS]], a POS operating system based on IBM 4690 OS and FlexOS
*** [[FlexOS 68K]], a derivative of Concurrent DOS 68K
** [[Multiuser DOS]], the successor of Concurrent DOS 386
*** [[CCI Multiuser DOS]]
*** [[Datapac Multiuser DOS]]
**** [[Datapac System Manager]], a derivative of Datapac Multiuser DOS
*** [[IMS Multiuser DOS]]
**** IMS [[REAL/32]], a derivative of Multiuser DOS
***** IMS [[REAL/NG]], the successor of REAL/32
** [[DOS Plus]] 1.1 – 2.1, a single-user, multi-tasking system derived from Concurrent DOS 4.1 – 5.0
** [[DR-DOS]] 3.31 – 6.0, a single-user, single-tasking native DOS derived from Concurrent DOS 6.0
*** Novell [[PalmDOS]] 1.0
*** Novell [[Star Trek project|"Star Trek"]]
*** [[Novell DOS]] 7, a single-user, multi-tasking system derived from DR DOS
*** Caldera [[OpenDOS]] 7.01
*** Caldera [[DR-DOS]] 7.02 and higher