Show HN: Kyushu, A self-hostable WASM sandbox for JavaScript workers

Article excerpt

A developer has built Kyushu, a self-hostable WebAssembly sandbox designed to safely execute JavaScript workers in isolated environments. The project addresses a common challenge in distributed systems: running untrusted or third-party code without risking the host application. By leveraging WASM's built-in security model, Kyushu allows users to deploy and manage sandboxed JavaScript execution on their own infrastructure, rather than relying on cloud providers. The tool targets developers building platforms that need to execute dynamic code, think plugin systems, edge computing, or multi-tenant applications, while maintaining control over resource limits and system access.