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Game · Puzzle, board & word games

Chess Clock

Chess Clock is a board game, available on Linux.

  • Completely free
  • Linux
  • Open source

At a glance

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

Its licence (GPL-3.0+) 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

Chess Clock is a simple application to provide time control for over-the-board chess games. Intended for mobile use, players select the time control settings desired for their game, then the black player taps their clock to start white's timer. After each player's turn, they tap the clock to start their opponent's, until the game is finished or one of the clocks reaches zero.

Description from Flathub — AppStream (Flathub)

Sources and checks

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

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