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ZervoFirefox
Free

Free and open source under the MPL-2.0 licence.

 Free

Free software from a non-profit-owned foundation. Mozilla sells separate subscription…

Windows, macOS, Linux Windows, macOS, Linux, Android, iOS
  • Uses Servo rather than Chromium or Gecko
  • Sidebar workspaces with several layouts
  • Total Cookie Protection stops cookies following you between sites
  • An engine that is not Chromium, which matters for the health of the web
  • Some sites do not work because Servo is incomplete
  • Linux and Windows builds are untested
  • A small number of sites are still built and tested only against Chromium
  • Mozilla’s revenue comes largely from a search deal, which shapes some defaults
Downloadable app Downloadable app
Open source Open source
License: MPL-2.0 License: MPL-2.0
No account needed No account needed
Not stated if it works offline Works offline

Checked October 2, 2026

Checked September 20, 2026

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