Lichess
♞ lichess.org: the forever free, adless and open source chess server ♞ observed · 2026-10-20
Health v2 · maintenance only
68/100
- Activity 100
- Release rhythm 8
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-10-21. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 5355
- days_rel: n/a
- days_push: 1
- n_releases_24m: 0
Adoption not part of the score
18865 stars · 2835 forks observed · 2026-10-20
What it is AI-extracted, prompt v1, taxonomy v1, 2026-10-19, confidence 0.98
Lichess is a free, ad‑less, open‑source online chess server written in Scala and TypeScript. It provides real‑time gameplay, analysis, tournaments, puzzles, and a collaborative study board through a web and mobile interface.
Use cases
- host a real‑time multiplayer chess platform
- integrate Stockfish analysis into a web app
- run large‑scale chess tournaments with unlimited participants
- provide a searchable database of billions of historic games
- build a multilingual, accessible chess learning environment
When to choose
- you need a fully featured, production‑ready chess server with real‑time WebSocket support
- you want an open‑source stack that includes Scala Play backend and TypeScript frontend
- you require built‑in analysis via Stockfish and a massive game database
When to avoid
- you need a lightweight, single‑player chess engine without server components
- your project cannot run on the JVM/Scala ecosystem
- you prefer a proprietary solution with commercial support
Facets
application · maturity active
web-framework http-server websocket api-framework auth authorization database search-engine caching message-queue web-development education browser cross-platform scala play-framework open-source adless free chess real-time stockfish elasticsearch mongodb typescript snabbdom gaming linux web-server mobile
5 sources
- readme: https://github.com/lichess-org/lila · fetched 2026-10-20 · 1fc12f2c43ba
- homepage: https://lichess.org · fetched 2026-10-05 · 47f53f541022
- site_page: https://lichess.org/features · fetched 2026-10-05 · c7fb2f211796
- site_page: https://lichess.org/about · fetched 2026-10-05 · d36f208e4aac
- site_page: https://lichess.org/faq · fetched 2026-10-05 · cf5b805504d9
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| lichess-org/lila | main | 68 |
| lichess-org/mobile | frontend | 99 |
| lichess-org/lichobile | mirror | 10 |
| lichess-org/chessground | frontend | 99 |
For agents
markdown · JSON · MCP: product_card(name="lichess-org/lila")
Data as of 2026-10-19T08:05:51.212177+00:00 · Report a problem