A free and open source chess database application for Linux, Mac OS X and Windows.


  • Multi-platform. Supports Windows, Linux and Mac OS X
  • Load and save PGN files
  • Work with multiple databases simultaneously
  • Browse chess games, including variations
  • Enter moves, variations, comments
  • Setup board, copy/paste FEN
  • Search in Databases for text or positions
  • Display tree of moves for the current position
  • Analyze using UCI and Winboard/Xboard Chess engines
  • Prepare for openings or opponents
  • Training mode (next move is hidden)
  • Integrated Stockfish engine
  • FICS Support

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User Ratings

ease 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 4 / 5
features 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 4 / 5
design 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 4 / 5
support 1 of 5 2 of 5 3 of 5 4 of 5 5 of 5 4 / 5

User Reviews

  • Perfect, simple but very powerfull chess database tool.

  • Very good chess database & pgn viewer. It even has an endgame table-base so it makes it extremely useful for analysis. Everything in this is absolutely perfect... it's truly the best(free) pgn database/viewer.

  • Very lean an beautiful chess database. Database, game view, opening tree, engine analysis all there!!

  • A good tool for chess players

  • This is a very good interface, runs excellent with chess engines.... However, for the mac retina display, the gui is "pixely" - it looks like the gui was designed with a set resolution without using DPI or something, i.e. the pieces and buttons don't look "smooth". Another concern about the design is that I am having a little trouble figuring out how to save my pgn files after I have written in comments on games etc. Otherwise, I would recommend this to anyone using a mac.

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Additional Project Details


English, German

Intended Audience

End Users/Desktop

User Interface


Programming Language


Database Environment