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Lichess

The free and open source chess server

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We've verified that the organization lichess-org controls the domain:
- lichess.org
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3.1k followers
https://lichess.org
@lichess@mastodon.online
contact@lichess.org

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Overview
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README.md

Lichess is a charity and a free, libre, no-ads, open source chess server.

Complete list of source repositories (most, but not all, can be found below)
About
Discord
Development Onboarding

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lila lila Public

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

Scala 16.8k 2.4k
api api Public

Lichess API documentation and examples

TypeScript 489 159
scalachess scalachess Public

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

Scala 724 217
mobile mobile Public

New Lichess mobile app in Flutter

Dart 1.8k 266

Repositories

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Showing 10 of 66 repositories

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

lichess-org/lila’s past year of commit activity

Scala 16,784 AGPL-3.0 2,424 1,064 (11 issues need help) 25 Updated Jun 26, 2025
mobile Public
New Lichess mobile app in Flutter

lichess-org/mobile’s past year of commit activity

Dart 1,750 GPL-3.0 266 260 (5 issues need help) 18 Updated Jun 26, 2025
lila-search Public
Keep elasticsearch threads out of your web facing app, kids

lichess-org/lila-search’s past year of commit activity

Scala 49 AGPL-3.0 25 1 4 Updated Jun 25, 2025
flutter-chessground Public
Chessboard package for flutter

lichess-org/flutter-chessground’s past year of commit activity

Dart 60 GPL-3.0 45 2 3 Updated Jun 25, 2025
scalachess Public
Chess API written in scala. Immutable and free of side effects.

lichess-org/scalachess’s past year of commit activity

Scala 724 MIT 217 2 6 Updated Jun 24, 2025
lila-fishnet Public
Proxy between lila and fishnet move clients

lichess-org/lila-fishnet’s past year of commit activity

Scala 43 AGPL-3.0 28 1 3 Updated Jun 24, 2025
api Public
Lichess API documentation and examples

lichess-org/api’s past year of commit activity

TypeScript 489 AGPL-3.0 159 21 0 Updated Jun 24, 2025
lila-ws Public
Lichess' websocket server

lichess-org/lila-ws’s past year of commit activity

Scala 161 AGPL-3.0 95 2 1 Updated Jun 24, 2025
lila-docker Public
Lichess local development using Docker Compose.

lichess-org/lila-docker’s past year of commit activity

Rust 78 AGPL-3.0 69 2 0 Updated Jun 20, 2025
chess-openings Public
An aggregated data set of chess opening names

lichess-org/chess-openings’s past year of commit activity

Python 425 CC0-1.0 106 5 3 Updated Jun 17, 2025

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lichess chess stockfish dart functional-programming

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