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Deep DiveKoncentro
Free

Free and open source under the GPL-3.0-or-later licence, with optional donations.

 Free

Free and open source under GPL-3.0-or-later.

Linux Windows, macOS, Linux
  • Pomodoro timer and free-running stopwatch in one app
  • OS-level website blocking during focus sessions
  • Combines timed work sessions and task lists
  • Supports separate workspace settings
  • Designed for GNOME on Linux only
  • Blocking is tied to the app rather than browser-specific rules
  • Website blocking uses a local proxy server
  • Assumes no other proxy server is in use
Downloadable app Downloadable app
Open source Open source
License: GPL-3.0-or-later License: GPL-3.0-or-later
No account needed Not stated if an account is needed
Works offline Not stated if it works offline

Checked October 1, 2026

Checked October 8, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.