Shiro

A browser-based development environment that provides a shell, git, npm, node, C compiler, SQLite, Python, and Claude Code, solving the problem of needing a local setup. It targets developers and engineering teams of all sizes, from freelancers to enterprises, who want to code without server infrastructure. It is delivered as a single self-contained HTML file that runs entirely client-side, with files persisting in IndexedDB and WASM runtimes loaded on demand.

Key features

• Full bash-compatible shell with pipes and redirects
• Real git operations via isomorphic-git
• npm install and run packages
• Node.js runs JS/TS/JSX/TSX
• C compiler (xcc) via WASM
• SQLite database via sql.js
• Python via Pyodide
• Lua and jq runtimes
• esbuild bundler
• Claude Code CLI integration
• Files persist in IndexedDB
• Snapshot filesystem as GIF
• Express shim with Router support
• npx auto-installs packages
• POSIX-like filesystem API