Game · Puzzle, board & word games

ChessX

ChessX is a board game, available on Linux.

Completely free
Linux
Open source

At a glance

All of ChessX is free: no feature is locked behind a paid plan, and its code is open.

Its licence (GPL-2.0) is a copyleft open source licence: you may use, study, modify and redistribute it, including commercially; modified versions must keep the same licence.

Strengths

Open source code
Commercial use allowed

About

ChessX is an Open Source chess database. With ChessX you can operate on your collection of chess games in many ways: browse, edit, add, organize, analyze, etc. Load and save PGN files Work with multiple databases simultaneously Browse games, including variations Enter moves, variations, comments Play games in training mode or play out games against an engine Setup board, copy/paste FEN, merge games Lint tools to catch performance, usability, version compatibility, and other problems. Display opening tree for current position Analyze using UCI and Winboard/Xboard Chess engines Observe and play games on FICS

Description from Flathub — AppStream (Flathub)

Sources and checks

Facts collected from Flathub (credit card, source code, publisher, licence, free status, platforms, commercial use, version) — 8 November 2026
Last technical check: 7 November 2026
Description from Flathub — AppStream (Flathub)

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KMahjongg is a solitaire game, available on Windows and Linux.

Completely freeWinLinux