PGN is a parser that is part of the ECHECS project, designed to interpret the PGN (Portable Game Notation) specification.

Fix your chess PGNs' erroneous, ambiguous, and missing moves with this handy tool!

PGN viewer widget

The Ultimate Chess Toolkit – a modern, open-source, cross-platform GUI to analyze games, train repertoires, and manage engines and databases.

A collection of tools for working with PGNs

Enkelagon Chess is a dragon-themed Java Swing chess GUI with Stockfish integration, featuring animated visuals, real-time analysis, configurable AI difficulty, and full PGN support.

Vue 3 chess board with drag-and-drop, legal moves (incl. castling), PGN-style move list, replay controls, and export. TypeScript, Pinia, Vite, Tailwind.

A Go implementation of pgn-extract for searching, filtering, and manipulating chess games in PGN format. Features CQL pattern matching, ECO classification, duplicate detection, and multiple output formats.

A lightweight Java library for encoding and decoding common chess notations, including FEN (Forsyth–Edwards Notation), PGN (Portable Game Notation), and SAN (Standard Algebraic Notation).

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

PyChess - a chess client for Linux/Windows

Chess resources and tools

Portable Game Notation (PGN) parser

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

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

Export your chess.com/lichess.org games using their APIs

Reproducible chess research toolkit for UCI engines: mine tactical puzzles, convert/inspect analysis dumps, and export ML-ready datasets for AI experiments and training.

A chess PGN to Tex conversion tool

Chess-aware custom types, FEN/PGN parsing & more

Generates a checkmating pattern in chess.