# quickjs-ng/quickjs

QuickJS, the Next Generation: a mighty JavaScript engine

Repository: https://github.com/quickjs-ng/quickjs
Canonical: https://ross.abutalabs.com/products/quickjs-ng-quickjs
Homepage: https://quickjs-ng.github.io/quickjs/
Language: C
License: MIT
License Family: permissive
Last push: 2026-08-26T06:55:01+00:00

## Health v2 (maintenance only)
Score: 89/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 86, longevity 74
- inputs: {"age_days": 1036, "days_push": 7, "days_rel": 13, "gap_med": 37.0, "n_releases_24m": 17}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3656, forks 359 (observed 2026-08-28T04:08:13.048879+00:00)

## What it is
QuickJS-NG is a small, embeddable JavaScript engine written in C that aims to support the latest ECMAScript specification. It is an actively maintained community fork of Fabrice Bellard's original QuickJS project, focused on testing, cross-platform support, and modern ES features.

## Use cases
- embed a javascript engine in a c or c++ application
- run javascript scripts from a native program
- lightweight js interpreter for embedded devices
- evaluate ecmascript code without node.js
- add a scripting language to my game or app
- small footprint javascript runtime for iot

## When to choose
- you need a tiny, embeddable JS engine with low memory footprint
- you want an actively maintained fork with modern ECMAScript support
- you need cross-platform JavaScript scripting inside a C/C++ codebase

## When to avoid
- you need maximum JavaScript throughput like V8 or JIT compilation
- you need the full Node.js standard library and npm ecosystem
- you want a browser-grade JavaScript runtime

## Facets
- artifact type: library
- maturity: active
- function: interpreter, programming-language, embedded
- domain: programming-languages, parsers, developer-tools, embedded-systems
- platform: c, cpp, cross-platform, embedded, cli
- tags: javascript-engine, ecmascript, embeddable, quickjs-fork, scripting

## Member repositories
- quickjs-ng/quickjs (main) score 89

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:13.048879+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 2026-08-29T18:31:38.310524+00:00, confidence not recorded.
  - readme: https://github.com/quickjs-ng/quickjs (fetched 2026-08-28T04:08:13.048879+00:00, sha fe2760de5a67)
  - homepage: https://quickjs-ng.github.io/quickjs/ (fetched 2026-08-29T09:25:46.469097+00:00, sha dbba0ee88846)
- Data as of 2026-08-30T08:39:29.467469+00:00.