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Floorp vs Zervo: catalog facts
Floorp	Zervo
Free Free and open source under MPL-2.0. The project asks for sponsorship but nothing in the…	Free Free and open source under the MPL-2.0 licence.
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	Uses Servo rather than Chromium or Gecko Sidebar workspaces with several layouts
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	Some sites do not work because Servo is incomplete Linux and Windows builds are untested
Downloadable app	Downloadable app
Open source	Open source
License: MPL-2.0	License: MPL-2.0
No account needed	No account 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.