# caiiiycuk/js-dos

The best API for running dos programs in browser

Repository: https://github.com/caiiiycuk/js-dos
Canonical: https://ross.abutalabs.com/products/js-dos
Homepage: https://js-dos.com
Language: TypeScript
License Family: other
Topics: js, browser, dosbox, dos
Last push: 2026-08-24T16:12:13+00:00

## Health v2 (maintenance only)
Score: 97/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 93, longevity 100
- inputs: {"age_days": 4266, "days_push": 9, "days_rel": 51, "gap_med": 9.5, "n_releases_24m": 25}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1322, forks 180 (observed 2026-08-28T04:04:21.974513+00:00)

## What it is
js-dos is a TypeScript library and API for running DOS and Windows 9x programs in the browser or Node.js, acting as a frontend for DOSBox/DOSBox-X emulators compiled to WebAssembly. It offers advanced features like 3Dfx-accelerated rendering, IPX networking over WebRTC, multiplayer, save/load persistence via OPFS, and streaming of large disk images.

## Use cases
- run dos games in the browser
- embed a dos emulator in my web app
- play windows 95/98 games in browser
- add multiplayer to browser dos games
- stream large dos disk images without a backend
- save and load dos game state in the browser
- run dos programs in node.js

## When to choose
- you want to run DOS or Win9x software in a browser with minimal setup
- you need advanced features like 3Dfx rendering, IPX networking, or multiplayer
- you want to serve huge DOS games via backendless disk streaming
- you need both browser and Node.js execution

## When to avoid
- you need to emulate non-DOS platforms like consoles or arcade systems
- you want a general-purpose emulator frontend for desktop use rather than web embedding
- you require a permissively licensed dependency and cannot accept the project's missing license
- you need production mobile support on v8, which is still work-in-progress

## Facets
- artifact type: library
- maturity: active
- function: game-engine, simulation, wasm, graphics, audio-processing, sdk
- domain: gaming-tools, web-development, frontend, simulation, cross-platform
- platform: browser, wasm, cross-platform
- tags: dosbox, dos-emulation, emulator-frontend, webassembly, retro-gaming, 3dfx, ipx-networking, windows-9x, opfs, multiplayer, nodejs, web

## Member repositories
- caiiiycuk/js-dos (main) score 97

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:21.974513+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 2026-08-30T04:47:07.787213+00:00, confidence not recorded.
  - readme: https://github.com/caiiiycuk/js-dos (fetched 2026-08-28T04:04:21.974513+00:00, sha 2884a01da819)
  - homepage: https://js-dos.com (fetched 2026-08-29T12:06:15.048355+00:00, sha ba72c386743f)
- Data as of 2026-08-30T08:39:29.467469+00:00.