List of disk operating systems

This is a list of disk operating systems in which the acronym DOS is used to form their names. Many of these are simply referred to as "DOS" within their respective communities.

## Contents

* 1 MS-DOS / IBM PC DOS compatible systems
* 2 Other x86 disk operating systems
* 3 Disk operating systems for other platforms
* 4 See also
* 5 References

## MS-DOS / IBM PC DOS compatible systems

Main article: Engineering:DOS

* MS-DOS (since 1981), Microsoft operating system based on 86-DOS for x86-based personal computers
* IBM PC DOS (since 1981), OEM version of MS-DOS for the IBM Personal Computer and compatibles, manufactured and sold by IBM from the 1980s to the 2000s
* DR-DOS (since 1988), MS-DOS-compatible operating system originally developed by Digital Research
* FreeDOS (since 1998), open source MS-DOS clone
* PTS-DOS (since 1993), MS-DOS clone developed in Russia by PhysTechSoft
* ROM-DOS, MS-DOS clone by Datalight

## Other x86 disk operating systems

* 4680 OS, an IBM operating system based on FlexOS 286 by Digital Research
* 4690 OS, an IBM operating system based on FlexOS 386 by Digital Research
* 86-DOS (a.k.a. QDOS, created 1980), an operating system developed by Seattle Computer Products for its 8086-based S-100 computer kit, heavily inspired by CP/M
* Concurrent DOS (a.k.a. CDOS, Concurrent PC DOS and CPCDOS) (since 1983), a CP/M-86 and MS-DOS 2.11 compatible multiuser, multitasking DOS, based on Concurrent CP/M-86 developed by Digital Research
* Datapac System Manager, a successor of Multiuser DOS by Datapac Australasia
* DOS Plus (since 1985), a PC DOS and CP/M-86 compatible multitasking operating system for early x86-based personal computers, based on Concurrent PC DOS 4.1/5.0 by Digital Research
* FlexOS, a modular distributed real-time multitasking operating based on Concurrent DOS 286 by Digital Research
* Multiuser DOS (a.k.a. MDOS), a PC DOS and CP/M-86 compatible multiuser multitasking operating system based on Concurrent DOS by Digital Research
* NetWare PalmDOS, a successor of DR DOS 6.0 specifically tailored for early mobile and palmtop PCs by Novell
* Novell DOS, a multitasking successor of DR DOS 6.0 by Novell
* OpenDOS, a successor of Novell DOS by Caldera
* REAL/32, a real-time successor of Multiuser DOS by Intelligent Micro Software

## Disk operating systems for other platforms

* AmigaDOS, the disk operating system portion of AmigaOS
* AMSDOS, for Amstrad CPC compatibles
* ANDOS, operating system for the Russian Electronika BK computers
* Apple DOS, operating system for the Apple II series from late 1978 through early 1983
* Apple ProDOS, name for both ProDOS 8 for the Apple II and ProDOS 16 for the Apple IIGS
* Atari DOS, for the Atari 8-bit family of home computers
* Commodore DOS, for Commodore's 8-bit computers
* Cromemco DOS (CDOS), a CP/M-like operating system
* CSI-DOS, for the Soviet Elektronika BK computers
* DOS (Diskette Operating System), a small OS for 16-bit Data General Nova computers, a cut-down version of their RDOS.
* DEC BATCH-11/DOS-11, the first operating system to run on the PDP-11 minicomputer
* Delta DOS, third party option from Premier Microsystems for the Dragon 32/64
* DIP DOS, the operating system of the Atari Portfolio
* DOS/360, 1966 IBM System/360 mainframe computer Disk Operating System
* DOS XL, Atari 8-bit family DOS from Optimized Systems Software
* DragonDOS, for the Dragon 32/64
* GEMDOS, one of the components of the Atari TOS
* IS-DOS, for Russian ZX Spectrum clones, developed in 1990 or 1991
* MasterDOS, replacement DOS for the SAM Coupé
* MDOS, Myarc Disk Operating System for the Geneve 9640
* MSX-DOS, a cross between MS-DOS 1.0 and CP/M developed by Microsoft for the MSX computer standard
* MyDOS,[1] third-party Atari 8-bit family DOS
* NewDos/80, Apparat's feature-rich alternative to TRSDOS for the TRS-80.
* Oric DOS, for the Oric-1 home computer
* PTDOS,[2] for the 1970s Sol-20 from Processor Technology
* SAMDOS, original DOS for the SAM Coupé
* Sinclair QDOS, for the[Sinclair QL
* RDOS, a real-time operating system released in 1972 for the Data General Nova and Eclipse minicomputers
* SK*DOS,[3] for Motorola 68000-based systems
* SmartDOS,[1] third-party Atari 8-bit family DOS
* SpartaDOS, third-party Atari 8-bit family DOS
* TOPDOS,[1] third-party Atari 8-bit family DOS
* TR-DOS, for the ZX Spectrum
* TRSDOS, for the Tandy TRS-80 line of 8-bit Zilog Z80 microcomputers

## See also

* DOS (disambiguation)
* DOS 1 (disambiguation)
* DOS 2 (disambiguation)
* DOS 3 (disambiguation)
* DOS 4 (disambiguation)
* DOS 5 (disambiguation)
* DOS 6 (disambiguation)
* DOS 7 (disambiguation)
* DOS 8 (disambiguation)
* DOS 10 (disambiguation)
* DOS 20 (disambiguation)
* DOS 30

## References

1. ↑ 1.0 1.1 1.2 Clausen, Eric (July 1985). "Everything You Wanted to Know About Every D.O.S.". Antic 4 (3).
2. ↑ "PTDOS User's Manual". Processor Technology Corporation. 1978. http://deramp.com/sol20.org/manuals/img/ptdos-1.5-os-img.pdf.
3. ↑ "SK*DOS 68K User's Manual". http://www.textfiles.com/bitsavers/pdf/peripheralTechnology/PT68K4/pdf/SK*DOS_68K_Users_Manual_Oct90.pdf.

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