Kyushu
Self-hostable WASM sandbox for JavaScript workers without Node or Docker
- Category
- Developer Tools
- Launched
- June 7, 2026
- Pricing
- free
- Founder
- le_chuck
- Website
- kyushu.dev

Kyushu is an open source CLI tool that lets you write JavaScript or TypeScript handlers using a Cloudflare Workers style API, compile them into self contained WebAssembly binaries, and run them anywhere with a single command ( kyu ). It eliminates the need for Node.js, Bun, or Docker, providing a lightweight, isolated runtime.
Discovered via
- Hacker News Show HN · · Show HN: Kyushu – A self-hostable WASM sandbox for JavaScript workers