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

PyChess - a chess client for Linux/Windows

chess library for legal move generation, FEN/PGN parsing and more

Chess and chess variant rules and operations in TypeScript

A chess library for PHP offering move validation, data conversion from one format to another, multiple variants, UCI engine support, explanation of chess positions, and image recognition.

C# chess library containing a complete data structure and move generation.

Predict live chess games into FEN notation.

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.

Converting real images of a chessboard to FEN codes.

Accepts FEN, PGN or array data for chess board and generates PNG or buffer.

Asynchronous PHP server that provides services of data and chess functionality to play online over a WebSocket connection.

A Rust chess library with the aim to be as feature-rich as possible

A WordPress plugin to display chess games and diagrams (using the standard FEN and PGN notations).

Programming language made up of chess games

Takes PGN as input and returns FEN

A C11 chess engine & GUI

A JavaScript/TypeScript library implementing the chess game rules and providing tools to read/write the standard chess file formats.

Chess Diagram React Component

REST-like chess API.

EPD opening book generation and filtering for chess and chess variants