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@osfree-project

osFree project

The open source OS/2 successor

Hi there 👋

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osFree is a Free Open Source software operating system development project, aiming to replace eventually all OS/2 subsystems with Open source analogues. It aims for OS/2 Warp 4 (Merlin) as a base compatibility system, which does not mean that we will not support features of newer (OS/2 Warp Server for e-business, eComStation and ArcaOS) OS/2 versions. This includes rewriting not only user-level code but the OS/2 kernel too.

Getting started

It is, first of all, development project. So, you need to download and configure build environment first. Read http://osfree.org/doku/en:develop:guidelines for more information.

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  1. osfree Public

    osFree - open source Operating System/2 clone, usermode parts.

    C 145 13

  2. FreeLdr Public

    FreeLDR - highly configurable boot loader

    C 5 1

  3. DOS Public

    DOS Personality

    C 7

  4. FamilyAPI Public

    Shared API for DOS and OS/2 to produce dual mode applications

    Assembly 1

  5. WIN16 Public

    osFree Janus: Open-Source Windows 3.0 Clone

    C 49 4

  6. doskrnl Public

    Forked from FDOS/kernel

    Modified FreeDOS kernel - implements DOSKRNL for osFree MVM

    C 2

Repositories

Showing 10 of 44 repositories
  • osfree Public

    osFree - open source Operating System/2 clone, usermode parts.

    C 145 13 15 0 Updated Jul 8, 2026
  • DOS Public

    DOS Personality

    C 7 0 6 0 Updated Jul 8, 2026
  • WIN16 Public

    osFree Janus: Open-Source Windows 3.0 Clone

    C 49 4 12 0 Updated Jul 8, 2026
  • taskman Public

    Windows 3.x TaskMan clone

    C 5 1 1 0 Updated Jul 1, 2026
  • clipbrd Public

    Windows 3.x clipboard viewer clone

    C 3 GPL-2.0 0 2 0 Updated Jul 1, 2026
  • notepad Public

    Open source notepad clone for windows 3.x

    C 6 LGPL-2.1 0 3 0 Updated Jul 1, 2026
  • wiki Public

    osFree Wiki backup

    3 CC-BY-SA-4.0 0 0 0 Updated Jun 3, 2026
  • clock Public

    Windows 3.x Clock open source clone

    C 6 LGPL-2.1 0 1 0 Updated May 28, 2026
  • winver Public

    Windows 3.x winver clone

    C 5 LGPL-2.1 0 3 0 Updated May 28, 2026
  • doskrnl Public Forked from FDOS/kernel

    Modified FreeDOS kernel - implements DOSKRNL for osFree MVM

    C 2 GPL-2.0 178 0 0 Updated Mar 6, 2026