ECO Codes
Search Encyclopedia of Chess Openings codes and named lines, with a board diagram for every opening.
Reference Tools
Chess opening, engine, software, and development references.
Engine Releases
A daily feed of the latest releases from open-source chess engines on GitHub, newest first.
Software catalogue
Jupiter chess programs, databases, engine interfaces, training software, PGN utilities and developer libraries.
Stockfish Commits
Browse Stockfish commits, source snapshots, authors, dates, and messages.