List of disk operating systems called DOS

Short description: none

This is a list of disk operating systems with the acronym DOS as part of the name (e.g., TRSDOS for the TRS-80 line of computers). Many are (or were in the day) called simply DOS within the context of their respective user communities. In the case of MS-DOS, its ubiquitousness as the operating system for IBM PC compatibles, prior to Windows 95, caused DOS to be widely used as a synonym for MS-DOS.

## Contents

* 1 For IBM PC compatible systems
* 2 For other x86 systems
* 3 For Atari 8-bit computers
* 4 For other platforms
* 5 See also
* 6 References

## For IBM PC compatible systems

Main article: Engineering:DOS

In chronological order of release:

* IBM PC DOS (1981), operating system developed by Microsoft based on 86-DOS
* MS-DOS, Microsoft's rebranded version sold under its own name. MS-DOS and IBM PC DOS were almost identical until PC DOS version 6.
* DR-DOS (1988), MS-DOS-compatible operating system originally developed by Digital Research
* ROM-DOS (1989), MS-DOS clone by Datalight
* PTS-DOS (1993), MS-DOS clone developed in Russia by PhysTechSoft
* FreeDOS (1994), open source MS-DOS clone
* MiniVMDOS[1] (2025), MS-DOS, PC-DOS, DR-DOS compatible system developed by PTSource

## For other x86 systems

In alphabetical order:

* 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
* 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
* 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

## For Atari 8-bit computers

In alphabetical order:

* Atari DOS, from Atari, Inc.
* DOS XL, from Optimized Systems Software
* MyDOS[2]
* SmartDOS[2]
* SpartaDOS
* SpartaDOS X
* TOP-DOS[2]
* Turbo-DOS

## For other platforms

In alphabetical order:

* AmigaDOS, disk operating system portion of AmigaOS
* AMSDOS, for Amstrad CPC compatibles
* ANDOS, for the Russian Electronika BK
* Apple DOS, 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
* 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
* DragonDOS, for the Dragon 32/64
* GEMDOS, one of the components of Atari TOS
* HDOS, for Heathkit computers
* IDOS, for the Ivel Ultra Apple II clone
* IS-DOS, for Russian ZX Spectrum clones, developed in 1990 or 1991
* IMDOS, for IMSAI 8080
* MasterDOS, replacement DOS for the SAM Coupé
* MDOS (Micropolis DOS) for S-100
* 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
* NewDos/80, third-party option for the TRS-80
* Oric DOS, for the Oric-1
* PTDOS,[3] for the 1970s Sol-20 from Processor Technology
* QDOS, for the Sinclair QL
* SAMDOS, for the SAM Coupé
* SDOS, for the SWTPC 6800
* RDOS, for the Data General Nova and Eclipse minicomputers
* SK*DOS,[4] for Motorola 68000-based systems
* TR-DOS, for the ZX Spectrum
* TRSDOS, for the TRS-80
* Xtal DOS for the Tatung Einstein

## See also

* DOS (disambiguation)

## References

1. ↑ MiniVMDOS
2. ↑ 2.0 2.1 2.2 Clausen, Eric (July 1985). "Everything You Wanted to Know About Every D.O.S.". Antic 4 (3).
3. ↑ "PTDOS User's Manual". Processor Technology Corporation. 1978. http://deramp.com/sol20.org/manuals/img/ptdos-1.5-os-img.pdf.
4. ↑ "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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