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Otter Browser vs Dooble: catalog facts
Otter Browser	Dooble
Free The open-source software is available without a license fee. Hosting, hardware and…	Free Free and open source, with optional donations.
Windows, Linux	Windows, macOS, Linux
Brings traditional desktop browser controls into a Qt application.	Frequent releases with detailed changelogs Built-in domain filtering
Some planned features remain unfinished.	Small project with a limited extension ecosystem Interface and features differ from mainstream browsers
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 28, 2026

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