lichess

♞ lichess.org: the forever free, adless and open source chess server ♞

lichess.org mobile application

Lichess mobile app v2

Mobile/Web chess UI for lichess.org

A bridge between Lichess bots and chess engines

Distributed Stockfish analysis for lichess.org

PyChess - a chess client for Linux/Windows

Chess API written in scala. Immutable and free of side effects.

irwin - the protector of lichess from all chess players villainous

Lichess API documentation and examples

An aggregated data set of chess opening names

WebAssembly port of the strong chess engine Stockfish

A Deep Learning UCI-Chess Variant Engine written in C++ & Python 🦜

A Rust library for chess and chess variant rules and operations

A highly customizable way to play chess in your terminal. Play online (via Lichess.org) and offline against the Fairy-Stockfish engine. All Lichess variants are supported.

The strong open source chess engine Stockfish compiled to JavaScript and WebAssembly using Emscripten

♟️ A chess engine with alpha-beta pruning, piece-square tables, move ordering, and command-line UI.

Lichess' websocket server

It's Lichess, but prettier

Python client for the lichess API