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Flowkeeper vs Tomatillo: catalog facts
Flowkeeper	Tomatillo
Free The open-source software is available without a license fee. Hosting, hardware and…	Free Free and open source under the GPL-3.0-or-later licence.
Windows, macOS, Linux	Linux
Provides keyboard shortcuts and configurable work sessions.	Separate durations for focus, short and long breaks Configurable number of cycles before a long break
It is a focus timer rather than a full project-management system.	Linux only Small project with a single maintainer
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-3.0-or-later
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked October 1, 2026

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