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Nook vs Pola Browser: catalog facts
Nook	Pola Browser
Free Free and open source, supported through Open Collective.	Free Distributed through the Mac App Store; pricing is not stated on the homepage.
macOS	macOS
Sidebar and spaces for organising tabs Runs both Chrome and Safari extensions	Tab folders, spaces and profiles for separating projects Visual, searchable tree of browsing history
macOS only Young project, recently reached version 1.0	Mac only Only a handful of extensions are supported so far
Downloadable app	Downloadable app
Open source	Closed source
License not stated	License not stated
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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