The fastest chess library and engine in TypeScript. 45x faster than chess.js, 18.7M nodes/s perft, zero dependencies, 100% MIT.
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Updated
Oct 6, 2026 - TypeScript
The fastest chess library and engine in TypeScript. 45x faster than chess.js, 18.7M nodes/s perft, zero dependencies, 100% MIT.
The Lichess analysis tree — turbocharged, optimized, and packaged as a standalone npm library with full PGN import/export.
Fast, fully offline PGN reader, viewer and editor for macOS. Built-in Stockfish engine, faithful saves, no account and no network.
Cross-platform chess application: installable Progressive Web App (PWA) with a desktop version (Tauri) in development. Offline-first, game library management, and engine/database analysis.
Local chess analysis board (Stockfish) and arena where your own UCI engines play each other
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