pgn

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

Play chess in any terminal. Rust TUI, Stockfish, Lichess.

PyChess - desktop chess client for Linux/Windows

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

PGN viewer widget

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

A small tool that generates gif of a chess game

Go (Golang) chess library: move generation with bitboards, PGN/FEN, UCI/Stockfish, opening books, image generation. Well-tested & fast.

Creates chess puzzles from chess games and positions

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.

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

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

A high performance Python C extension for chess

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

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

Chess PGN Trainer Pro: Drill Master 2026

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

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

Programming language made up of chess games

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