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Deep Dive vs Tomatillo: catalog facts
Deep Dive	Tomatillo
Free Free and open source under the GPL-3.0-or-later licence, with optional donations.	Free Free and open source under the GPL-3.0-or-later licence.
Linux	Linux
Pomodoro timer and free-running stopwatch in one app OS-level website blocking during focus sessions	Separate durations for focus, short and long breaks Configurable number of cycles before a long break
Designed for GNOME on Linux only Blocking is tied to the app rather than browser-specific rules	Linux only Small project with a single maintainer
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-3.0-or-later
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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