mozilla/shumway
Shumway is a Flash VM and runtime written in JavaScript observed · 2026-08-28
Health v2 · maintenance only
10/100
- Activity 0
- Release rhythm 35
- Longevity 100
Flags: no_releases archived
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 5372
- days_rel: n/a
- days_push: 2693
- n_releases_24m: 0
Adoption not part of the score
3669 stars · 393 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded
Shumway is a Flash (SWF) virtual machine and runtime implemented entirely in JavaScript/TypeScript, rendering Flash content in the browser without native code. It was a Mozilla experiment exploring a web-standards-based replacement for the Flash plugin, including a Firefox extension.
Use cases
- play flash swf files in the browser without a plugin
- render legacy flash animations using html5
- embed swf content in a web page
- run actionscript content in javascript
- replace adobe flash player with an open-source alternative
When to choose
- you need to render legacy SWF/Flash content in a modern browser without native plugins
- you want to study or extend a JavaScript implementation of a Flash VM
When to avoid
- you need a maintained, production-ready Flash player - the project is abandoned and development stopped years ago
- you need full compatibility with modern Flash content, since many features remain unimplemented
- you are building anything unrelated to legacy Flash content
Facets
library · maturity abandoned
interpreter graphics parser animation web-development graphics browser-extensions browser flash swf actionscript html5 firefox-extension vm web-server javascript
1 source
- readme: https://github.com/mozilla/shumway · fetched 2026-08-28 · 179b73b4373a
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| mozilla/shumway | main | 10 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem