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 representation written in Erlang using Bitboards, ready for use on game servers

A chess library for PHP offering move validation, common formats, multiple variants, UCI engine support, explanation of chess positions, and image recognition.

A small tool that generates gif of a chess game

PGN viewer widget

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.

Creates chess puzzles from chess games and positions

Fast non-allocating and streaming reader for chess games in PGN notation

An R package to read, write, create and explore chess games

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

Asynchronous PHP server that provides chess services over a WebSocket connection.

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

Programming language made up of chess games

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

Takes PGN as input and returns FEN

Chess game NPM Library (Angular 13)

Parse and create PGNs (Portable Game Notation for chess games)

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