List of disk operating systems called DOS


This is a list of disk operating systems with the acronym DOS as part of the name. Many are 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.

For IBM PC compatible systems

In chronological order of release:
  • IBM PC DOS, 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, MS-DOS-compatible operating system originally developed by Digital Research
  • ROM-DOS, MS-DOS clone by Datalight
  • PTS-DOS, MS-DOS clone developed in Russia by PhysTechSoft
  • FreeDOS, open source MS-DOS clone
  • , MS-DOS-compatible operating system by PTSource

For other x86 systems

In alphabetical order:

For Atari 8-bit computers

In alphabetical order:

For other platforms

In alphabetical order: