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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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3.6k followers
https://lichess.org
@[email protected]
contact@lichess.org

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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 17.5k 2.5k
api api Public

Lichess API documentation and examples

TypeScript 524 162
scalachess scalachess Public

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

Scala 746 224
mobile mobile Public

New Lichess mobile app in Flutter

Dart 2k 334

Repositories

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Showing 10 of 70 repositories

api Public
Lichess API documentation and examples

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

TypeScript 524 AGPL-3.0 162 21 0 Updated Jan 3, 2026
lila-search Public
Keep elasticsearch threads out of your web facing app, kids

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

Scala 50 AGPL-3.0 27 2 3 Updated Jan 3, 2026
lila Public
♞ lichess.org: the forever free, adless and open source chess server ♞

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

Scala 17,531 AGPL-3.0 2,527 1,155 (11 issues need help) 29 Updated Jan 2, 2026
fishnet Public
Distributed Stockfish analysis for lichess.org

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

Rust 860 GPL-3.0 107 5 1 Updated Jan 2, 2026
papers Public
Papers that use Lichess data, study Lichess, or cite Lichess

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

TeX 32 CC0-1.0 4 3 0 Updated Jan 2, 2026
lila-gif Public
Webservice to render Gifs of chess positions and games, and stream them frame by frame

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

Rust 112 AGPL-3.0 26 6 10 Updated Jan 1, 2026
lila-engine Public
Broker for communication between external engine providers and clients

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

Rust 10 AGPL-3.0 1 0 5 Updated Jan 1, 2026
lila-http Public
Handle some https://lichess.org/tournament load

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

Rust 40 AGPL-3.0 12 0 5 Updated Dec 31, 2025
scalachess Public
Chess API written in scala. Immutable and free of side effects.

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

Scala 746 MIT 224 4 4 Updated Dec 31, 2025
mobile Public
New Lichess mobile app in Flutter

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

Dart 2,006 GPL-3.0 334 361 (4 issues need help) 24 Updated Dec 30, 2025

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