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Floorp vs Zen Browser: catalog facts
Floorp	Zen Browser
Free Free and open source under MPL-2.0. The project asks for sponsorship but nothing in the…	Free Free and open source, funded by donations.
Windows, macOS, Linux	Windows, macOS, Linux
Vertical tabs, workspaces, split view and web panels are built in rather than bolted on with extensions Firefox underneath, so Gecko, containers and Firefox add-ons all still work	Vertical tabs, workspaces and split view built in, no extensions needed Firefox engine, so Firefox extensions and containers work
A small team rebasing on Firefox, so security updates arrive after Mozilla's, not with them Less-travelled code than Firefox itself, which means interface bugs the main browser does not have	Young project; interface changes between releases and bugs surface A small team maintaining a Firefox fork is a real long-term risk
Downloadable app	Downloadable app
Open source	Open source
License: MPL-2.0	License: MPL-2.0
No account needed	No account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked September 21, 2026

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