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BasiliskFirefox
Free

The open-source application is available without a license fee.

 Free

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

Windows, macOS, Linux Windows, macOS, Linux, Android, iOS
  • Runs classic XUL extensions that no current browser supports
  • Independent of Chromium and of current Firefox
  • Total Cookie Protection stops cookies following you between sites
  • An engine that is not Chromium, which matters for the health of the web
  • Small development team, so security fixes and web compatibility lag
  • Many modern sites do not work correctly
  • 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
Not stated if an account is needed No account needed
Not stated if it works offline Works offline

Checked September 22, 2026

Checked September 20, 2026

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