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The Top 1,230 Chess Open Source Projects on Github

Categories > Games > Chess
Lila ⭐ 9,976
♞ lichess.org: the forever free, adless and open source chess server ♞
Chess.js ⭐ 2,398
A Javascript chess library for chess move generation/validation, piece placement/movement, and check/checkmate/draw detection
Sunfish ⭐ 2,166
Sunfish: a Python Chess Engine in 111 lines of code
Chess Alpha Zero ⭐ 1,666
Chess reinforcement learning by AlphaGo Zero methods.
Python Chess ⭐ 1,539
A chess library for Python, with move generation and validation, PGN parsing and writing, Polyglot opening book reading, Gaviota tablebase probing, Syzygy tablebase probing, and UCI/XBoard engine communication
Lichobile ⭐ 1,218
lichess.org mobile application
Ancientbeast ⭐ 954
Turn Based Strategy Game. Master your beasts! 🐺
Game Server ⭐ 954
Distributed Java game server, including cluster management server, gateway server, hall server, game logic server, background monitoring server and a running web version of fishing. State machine, behavior tree, A* pathfinding, navigation mesh and other AI tools
Chessground ⭐ 602
Mobile/Web chess UI for lichess.org
Maia Chess ⭐ 490
Maia is a human-like neural network chess engine trained on millions of human games.
Pychess ⭐ 448
PyChess - a chess client for Linux/Windows
Fishnet ⭐ 416
Distributed Stockfish analysis for lichess.org
Stockfish Mac ⭐ 414
Beautiful, powerful chess app for the Mac
Command Line Chess ⭐ 389
A python program to play chess against an AI in the terminal.
Tensorflow_chessbot ⭐ 316
Predict chessboard FEN layouts from images using TensorFlow
Patchbay ⭐ 313
An alternative Secure Scuttlebutt client interface that is fully compatible with Patchwork
Cutechess ⭐ 311
Cute Chess is a graphical user interface, command-line interface and a library for playing chess.
Lichess Bot ⭐ 288
A bridge between Lichess API and chess engines
Nibbler ⭐ 243
Chess analysis GUI for UCI engines, with extra features for Leela (Lc0) in particular.
Lucaschess ⭐ 242
Chess GUI
Openingtree ⭐ 210
Consolidated view of all your chess games from chess.com, lichess, grandmaster games or custom pgn.
Play Online Chess With Real Chess Board ⭐ 201
Program that enables you to play online chess using real chess board.
Chessboardjsx ⭐ 185
🔲 Chessboard built for React
Fairy Stockfish ⭐ 168
chess variant engine supporting Xiangqi, Shogi, Janggi, Makruk, S-Chess, Crazyhouse, Bughouse, and many more
Droidfish ⭐ 166
DroidFish Android Chess App
Neural Chessboard ⭐ 139
♔ An Extremely Efficient Chess-board Detection for Non-trivial Photos ♔
Pleco ⭐ 136
A Rust-based re-write of the Stockfish Chess Engine
Flutter_chess_board ⭐ 133
A Chessboard widget for Flutter.
Chess Ai ⭐ 133
Simple chess AI in Javascript. Uses the chess.js and chessboard.js libraries.
Raspberryturk ⭐ 132
The Raspberry Turk is a robot that can play chess—it's entirely open source, based on Raspberry Pi, and inspired by the 18th century chess playing machine, the Mechanical Turk.
Stockfish.wasm ⭐ 125
WebAssembly port of the strong chess engine Stockfish
Blitz Tactics ⭐ 123
Fast-paced chess tactics trainer
Pychess Variants ⭐ 115
Chess variants server
Chessdata ⭐ 115
PGN Mirror
Berserk ⭐ 114
Python client for the lichess API
Listudy ⭐ 110
Listudy - chess training server
Stockfish.js ⭐ 103
The strong open source chess engine Stockfish compiled to JavaScript and WebAssembly using Emscripten
Chess Openings ⭐ 97
An aggregated data set of chess opening names
Chess Inspector ⭐ 92
Visualize move, protection and threat status
React Chessground ⭐ 90
React wrapper of Chessground
Vue Chessboard ⭐ 90
Chessboard vue component to load positions, create positions and see threats
Stockfish ⭐ 89
Integrates the Stockfish chess engine with Python
Allie ⭐ 89
Allie: A UCI compliant chess engine
Shakmaty ⭐ 80
A Rust library for chess move generation
Nnue Pytorch ⭐ 80
Stockfish NNUE (Chess evaluation) trainer in Pytorch
Arasan Chess ⭐ 78
Arasan chess engine
Lichs ⭐ 76
♟ Play chess against real players in your terminal using Lichess
Protochess ⭐ 75
Online multiplayer chess website that lets you build custom pieces/boards. Written in Svelte + Rust.
Cm Chessboard ⭐ 74
A JavaScript chessboard rendered in SVG, coded in ES6. Views FEN, handles move input, animated, responsive, mobile friendly.
Coronate ⭐ 73
A Swiss-style chess tournament management app.
Chesspositionranking ⭐ 73
Software suite for ranking chess positions and accurately estimating the number of legal chess positions
Chess.jl ⭐ 72
Julia chess programming library.
Andoma ⭐ 72
♞ A chess engine with alpha-beta pruning, piece-square tables, move ordering, and command-line UI.
Binbo ⭐ 72
Chess representation written in Erlang using Bitboards, ready for use on game servers
Chessboard Element ⭐ 70
A <chess-board> web component
Chess Steg ⭐ 69
Steganography in chess games
Irwin ⭐ 68
irwin - the protector of lichess from all chess players villainous
Jerry ⭐ 67
Jerry - Chess Program
Download ⭐ 65
UI mod for Dota 2 Auto Chess that adds several QoL improvements to the UI
Pgn2gif ⭐ 65
A small tool that generates gif of a chess game
Python Easy Chess Gui ⭐ 64
A Chess GUI based from Python using PySimpleGUI and Python-Chess.
Chessli ⭐ 63
A free and open source chess improvement app that combines the power of Lichess and Anki.
Trulyquantumchess ⭐ 63
A game of truly quantum chess, with interference, entanglement, etc.
Walleye ⭐ 62
A chess engine written from scratch in Rust ♞
Rchess ⭐ 62
♛ Chess package for R
React Native Chess ⭐ 61
A simple chess client
Galvanise_zero ⭐ 61
Learning from zero (mostly based off of AlphaZero) in General Game Playing.
Fdchessboardview ⭐ 59
An iOS / Mac view controller for chess boards
Chessbot ⭐ 59
PvP chess bot for the Telegram messenger. Bot is inline, type @chessy_bot in any chat in the Telegram.
Chess ⭐ 56
JavaScript Chess
Pgn Tactics Generator ⭐ 54
Generate chess puzzles / tactics from a pgn file
Chessops ⭐ 52
Chess and chess variant rules and operations in TypeScript
Chess Dataviz ⭐ 52
chess visualization library written for d3.js
Chess ⭐ 52
A fast chess library that use bitboards to play chess with Ruby
Fastchess ⭐ 51
Predicts the best chess move with 27.5% accuracy by a single matrix multiplication
Web Boardimage ⭐ 50
An HTTP service that renders chess board images
Chesso ⭐ 50
Jetpack Compose-based chess app with visualisation layers.
Minic ⭐ 50
A simple chess engine to learn and play with
Chess ⭐ 47
An R package to read, write, create and explore chess games
Chess.net ⭐ 47
[No longer maintained] A .NET chess library, written in C#
Animalchess ⭐ 47
Animal Fight Chess Game（斗兽棋） written in rust.
Lila Gif ⭐ 47
Webservice to render Gifs of chess positions and games, and stream them frame by frame
Lila Openingexplorer ⭐ 47
Opening explorer for lichess.org that can handle all the variants and billions of unique positions
Chess Artist ⭐ 46
A python script that can annotate chess games in pgn file with static evaluation or search score of an engine, can annotate an epd file with acd, acs, bm, and ce opcodes, can test engine with epd test suite and can generate chess puzzles.
Xiphos ⭐ 46
UCI chess engine
Unitychess ⭐ 45
A 3D chess game made with Unity.
Winter ⭐ 44
UCI Chess Engine
Chessendgametraining ⭐ 44
Chess Endgame Traininng: app to practice a variety of well organized set of chess endgames. From elementary to the most complex endgames, you can practice until you learn how to face all of them.
Mzinga ⭐ 43
Open-source software to play the board game Hive.
Leanchess ⭐ 42
The world's smallest chess program
Sunfish_rs ⭐ 41
Rust rewrite of the sunfish simple chess engine
Syzygy Tables.info ⭐ 41
User interface and public API for probing Syzygy endgame tablebases
Chess ⭐ 41
A modern and light chess game developed with HTML, CSS and Javascript.
Lila Tablebase ⭐ 40
Tablebase server for lichess.org
Banksia ⭐ 40
Chess tournament manager, standard C++ 11
Freechessclub ⭐ 40
Free Chess Club: Play online chess for free using a modern web interface for Internet Chess Servers such as FICS.
Online Chess ⭐ 39
在线联机下棋 | www.play1024.com
Chess ⭐ 38
🍣 Wasabi Chess Engine - written in AssemblyScript
Countergo ⭐ 38
UCI chess engine (golang)
Rust Pgn Reader ⭐ 38
Fast non-allocating and streaming reader for chess games in PGN notation
1-100 of 1,230 projects

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Advertising 📦 9
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Application Programming Interfaces 📦 120
Applications 📦 181
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Blockchain 📦 70
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Code Quality 📦 28
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Command Line Interface 📦 48
Community 📦 81
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Compilers 📦 60
Computer Science 📦 74
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Content Management 📦 167
Control Flow 📦 197
Data Formats 📦 77
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Data Storage 📦 132
Economics 📦 60
Frameworks 📦 198
Games 📦 122
Graphics 📦 103
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Learning Resources 📦 147
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Software Quality 📦 127
Text Editors 📦 45
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User Interface 📦 310
User Interface Components 📦 465
Version Control 📦 29
Virtualization 📦 68
Web Browsers 📦 38
Web Servers 📦 25
Web User Interface 📦 194
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