# open-watcom/open-watcom-v2

Open Watcom V2.0 - Source code repository, Wiki, Latest Binary build, Archived builds including all installers for download.

Repository: https://github.com/open-watcom/open-watcom-v2
Canonical: https://ross.abutalabs.com/products/open-watcom-v2
Language: C
License: NOASSERTION
License Family: other
Last push: 2026-09-03T01:35:56+00:00

## Health v2 (maintenance only)
Score: 86/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 100, release rhythm 60, longevity 100
- inputs: {"age_days": 5134, "days_push": 0, "days_rel": 0, "gap_med": 30.0, "n_releases_24m": 27}
- flags: prerelease_only, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1257, forks 202 (observed 2026-09-03T02:15:15.728160+00:00)

## What it is
Open Watcom V2 is the continued development of the classic Watcom C/C++ and Fortran compiler toolchain, including compilers, linker, debugger, and related build tools. It targets a wide range of platforms including DOS, Windows, Linux, and OS/2, and is popular for retro and cross-platform development.

## Use cases
- compile C programs for DOS
- build 16-bit and 32-bit retro applications
- cross-compile from Windows to DOS or OS/2
- maintain legacy Watcom codebases
- develop freestanding or embedded-style executables
- build software for old operating systems

## When to choose
- you need to build or maintain DOS, OS/2, or legacy Watcom projects
- you want a free, open-source compiler targeting retro platforms
- you need 16-bit code generation

## When to avoid
- you need modern C/C++ standards compliance (C++17/20)
- you want state-of-the-art optimizations for modern CPUs
- you need a compiler with broad modern library ecosystem support

## Facets
- artifact type: cli-tool
- maturity: active
- function: compiler, build-tool, developer-tools
- domain: compilers, programming-languages, developer-tools, cross-platform
- platform: windows, cross-platform, cpp, c
- tags: watcom, c-compiler, fortran, retro-computing, dos-development, toolchain, linker, debugger, linux, macos, dos

## Member repositories
- open-watcom/open-watcom-v2 (main) score 86

## Provenance
- Observed fields: from GitHub, fetched 2026-09-03T02:15:15.728160+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T05:07:25.281960+00:00, confidence not recorded.
  - readme: https://github.com/open-watcom/open-watcom-v2 (fetched 2026-09-03T02:15:15.728160+00:00, sha b775de7912aa)
- Data as of 2026-08-30T08:39:29.467469+00:00.