pypyjs/pypyjs
PyPy compiled to JavaScript observed · 2026-08-28
Health v2 · maintenance only
23/100
- Activity 0
- Release rhythm 8
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 4651
- days_rel: n/a
- days_push: 2724
- n_releases_24m: 0
Adoption not part of the score
1847 stars · 115 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
PyPy.js is the PyPy Python interpreter compiled to JavaScript via an experimental emscripten/asm.js backend, allowing Python to run in the browser with JIT compilation to JavaScript at runtime. It is an experimental project whose development is currently sleeping, with Pyodide recommended as a maintained alternative.
Use cases
- run python code in the browser
- execute python scripts client-side without a server
- embed a python interpreter in a web page
- try python live in a browser demo
- compile pypy to javascript
When to choose
- you need a historical or experimental python-in-browser implementation
- you want to study emscripten/asm.js compilation of a large interpreter
When to avoid
- you need a maintained python-in-browser solution (use Pyodide instead)
- you need production reliability or recent Python version support
- you need small bundle sizes or fast startup
Facets
library · maturity abandoned
interpreter compiler programming-languages web-development compilers browser wasm python-in-browser emscripten asmjs pypy jit javascript
1 source
- readme: https://github.com/pypyjs/pypyjs · fetched 2026-08-28 · a1dad06ae8ff
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| pypyjs/pypyjs | main | 23 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem