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Zen Browser vs Pola Browser: catalog facts
Zen Browser	Pola Browser
Free Free and open source, funded by donations.	Free Distributed through the Mac App Store; pricing is not stated on the homepage.
Windows, macOS, Linux	macOS
Vertical tabs, workspaces and split view built in, no extensions needed Firefox engine, so Firefox extensions and containers work	Tab folders, spaces and profiles for separating projects Visual, searchable tree of browsing history
Young project; interface changes between releases and bugs surface A small team maintaining a Firefox fork is a real long-term risk	Mac only Only a handful of extensions are supported so far
Downloadable app	Downloadable app
Open source	Closed source
License: MPL-2.0	License not stated
No account needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 2, 2026

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