# fcambus/jsemu

A list of emulators written in the JavaScript programming language

Repository: https://github.com/fcambus/jsemu
Canonical: https://ross.abutalabs.com/products/jsemu
Homepage: https://www.cambus.net/emulators-written-in-javascript/
License Family: other
Topics: javascript, emulator, emscripten
Last push: 2026-08-05T09:24:04+00:00

## Health v2 (maintenance only)
Score: 75/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 96, release rhythm 35, longevity 100
- inputs: {"age_days": 4465, "days_push": 28, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1854, forks 173 (observed 2026-08-28T04:05:44.678965+00:00)

## What it is
A curated list of emulators written in JavaScript, covering retro computers, consoles, and arcade machines that run in the browser. It catalogs projects like JSBeeb, Javatari.js, and Emscripten ports of classic emulators.

## Use cases
- find a javascript emulator for a retro console
- discover browser-based emulators for old computers
- list of emulators written in javascript
- find apple ii or atari emulator that runs in the browser
- research javascript emulation projects
- find emscripten ports of classic emulators

## When to choose
- you want to browse a curated catalog of JavaScript/browser emulators
- you're looking for a specific retro platform emulator that runs in a browser
- you want inspiration or reference projects for building your own emulator

## When to avoid
- you need an emulator for modern consoles or phones
- you want a native, non-browser emulator
- you need a single maintained emulator rather than a list of many projects

## Facets
- artifact type: learning-resource
- maturity: active
- function: simulation, developer-tools
- domain: gaming-tools, developer-tools, awesome-lists
- platform: browser
- tags: awesome-list, emulation, javascript, curated-list, retro-computing, emscripten

## Member repositories
- fcambus/jsemu (main) score 75

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:44.678965+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 2026-08-30T03:16:48.594300+00:00, confidence not recorded.
  - readme: https://github.com/fcambus/jsemu (fetched 2026-08-28T04:05:44.678965+00:00, sha 730bf91afbf8)
  - homepage: https://www.cambus.net/emulators-written-in-javascript/ (fetched 2026-08-29T10:56:13.094375+00:00, sha 045029cbebc3)
  - site_page: https://www.cambus.net/about (fetched 2026-08-29T10:56:13.104201+00:00, sha 4a852537a9ff)
- Data as of 2026-08-30T08:39:29.467469+00:00.