Lichess

lila

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

mobile

New Lichess mobile app in Flutter

chessground

Mobile/Web chess UI for lichess.org

fishnet

Distributed Stockfish analysis for lichess.org

scalachess

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

api

Lichess API documentation and examples

chess-openings

An aggregated data set of chess opening names

lila-ws

Lichess' websocket server

lila-openingexplorer

Opening explorer for lichess.org that can handle all the variants and trillions of unique positions

berserk

Python client for the lichess API

pgn-viewer

PGN viewer widget

compression

Chess clock and move compression algorithms for lichess.org

lila-gif

Webservice to render Gifs of chess positions and games, and stream them frame by frame

lila-docker

Lichess local development using Docker Compose.

lila-tablebase

Tablebase server

chessground-examples

Usage examples for chessground

lila-search

Keep elasticsearch threads out of your web facing app, kids

lila-fishnet

Proxy between lila and fishnet move clients

lila-http

Handle some https://lichess.org/tournament load

papers

Papers that use Lichess data, study Lichess, or cite Lichess

lila-db-seed

Sample database data for lila development

api-ui

some web UIs on top of the Lichess API

broadcaster

Broadcast your chess games on Lichess!

scalalib

Misc scala utilities shared by the lichess.org scala projects.

stockfish-web

A home for stockfish wasms - because we care

zulip

Zulip server and web app—powerful open source team chat - slightly hacked by and for lichess.org

fishnet-builder

Docker image for an environment that can produce fully static Stockfish builds

op1

Probe Marc Bourzutschky's partial 8-piece tablebase, op1

fishnet-assets

NNUE files built into https://github.com/lichess-org/fishnet

zerofish