---
via: https://twitter.com/wesbos/status/1756029879487791239
tags:
  - JavaScript
  - runtimes
---
A list of JavaScript runtimes and the engines they use.

- Node.js (V8)
- Deno (V8)
- Bun (JavaScript core - webkit's engine)
- Workerd (Cloudflare, V8)
- llrt (Amazon, QuickJS), [github.com/awslabs/llrt](https://github.com/awslabs/llrt)
- WinterJS (Wasmer, Spider Money)
- Edge Runtime (Vercel, V8)
- Lagon (Vercel Acquired, V8)
- Compute @​edge (Fastly, Spider Monkey)
- Edge Compute (Alibaba V8)
- Hermes (Facebook)
- Bloomberg (v8, Internal)
- Bytedance (v8, Internal)
- txiki (QuickJS)
- holepunch (V8) via [🦋 @ramage.in](https://bsky.app/profile/ramage.in/post/3klwpp3pcef23), [github.com/holepunchto/bare](https://github.com/holepunchto/bare)

## Engines

### QuickJS

"a very small JS engine from Farice Bellard - the genius behind ffmpeg" via [@wesbos](https://x.com/wesbos/status/1756031703955501168?s=20)

### Boa

[github.com/boa-dev/boa](https://github.com/boa-dev/boa)

"Boa is an experimental JS engine written in Rust" via [@alexchamberlain](https://x.com/alexchamberlain/status/1756047440560451703)