FreeDOS

freedos.orgsite

An open source DOS-compatible operating system for playing classic DOS games, running legacy business software, or developing embedded systems. Any program that works on MS-DOS should also run on FreeDOS.

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DOS

added

2026-10-10

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1. ▲
   Why DOS Was (and Is) a Thing - FreeDOS youtube.com

   video category #dos link ↗

   Historical talk starting from Unix, going through CPM, DOS 1.x, DOS 2.x, DOS 3.x, DOS 4.x, DOS 6.x, Windows 3.1, Windows 95 and ending with FreeDOS.

   
2. ▲
   FreeDOS patreon.com

   site category #software-patreons link ↗
   
3. ▲
   Micropython for FreeDOS github.com

   tool category #dos link ↗

   FreeDOS ad-hoc module for micropython.

   
4. ▲
   MS-DOS has been Open-Sourced! We Build and Run it! - Dave's Garage youtube.com

   video category #dos link ↗

   Former Microsoft employee David Plummer tells stories about development of MS-DOS and compiles MS-DOS 4.00 source code which has been open-sourced by Microsoft.

   
5. ▲
   perldos perldoc.perl.org

   site category #dos link ↗

   Perl for DOS.

6. ▲
   DOjS github.com

   tool category #dos link ↗

   JavaScript programming environment for MS-DOS, FreeDOS or any DOS-based Windows (like 95, 98, ME).

   

DOS › Source code > Open source DOS operating systems: “An open source DOS-compatible operating system for playing classic DOS games, running legacy business software, or developing embedded systems. Any program that works on MS-DOS should also run on FreeDOS.”