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Deep Dive vs Sessions: catalog facts
Deep Dive	Sessions
Free Free and open source under the GPL-3.0-or-later licence, with optional donations.	Free Free and open source under the AGPL-3.0-or-later licence.
Linux	Linux
Pomodoro timer and free-running stopwatch in one app OS-level website blocking during focus sessions	Customizable work and break durations Minimal, distraction-free interface
Designed for GNOME on Linux only Blocking is tied to the app rather than browser-specific rules	Linux only No task tracking or statistics mentioned
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: AGPL-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.