A browser-based runtime that brings Node.js to the web
Full require() implementation with node_modules traversal, package.json resolution, and circular dependency handling.
Install real npm packages from the registry into a virtual filesystem — all from the browser.
Run wasm32-wasip1 compiled programs (Rust, C, C++) in the browser using uwasi + BrowserFS.
Full Linux-style shell with pipes, redirects, tab completion, and 30+ built-in commands.
Virtual HTTP servers via Service Worker fetch interception with Express-like routing.
Polyfills for path, events, buffer, stream, crypto, http, net, url, querystring, assert, util, os.
Run a Rust program compiled to wasm32-wasip1 in the browser using the WASI polyfill.
WebAssembly RustWeb Worker for Verifiable Delay Function computation with progress reporting and pause/resume.
Web Worker VDFView project metadata and artifact information from the Cloudflare Worker API.
JSON API