ChessX

ChessX provides a full‑featured chess database that runs on Windows, macOS, and Linux. It lets users import an unlimited number of PGN files, merge or databases, and clean games from unwanted variations, annotations, or duplicates. The program organizes games into user‑defined categories and supports searching by position or text, while a visual opening tree helps explore and learn different lines.

For analysis, ChessX integrates with external engines such as Stockfish and Leela, and it includes built‑in support for Nalimov and Syzygy tablebases, enabling perfect endgame play without additional installation. Users can generate personalized statistics to prepare for specific opponents and examine game trends.

The software is open source, allowing users to compile it from source or contribute extensions. Recent updates add a Move Reader for visually impaired users, a dark theme, and various stability and.