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WaterfoxLibreWolf
Free

Free and open source under MPL-2.0. Development is funded by donations.

 Free

Free and open source under the MPL 2.0, maintained by volunteers.

Windows, macOS, Linux Windows, macOS, Linux
  • Telemetry and data collection are removed from the build, not just disabled in preferences
  • Ad blocking and private, anonymised DNS are on by default
  • Deletes cookies and website data on close by default
  • Ships uBlock Origin with custom default filter lists and strict tracking protection
  • One small team tracking Mozilla, so security updates land after Firefox's
  • The project has changed hands in the past, which matters if you are picking it on trust
  • The aggressive defaults break some sites and log you out every time you close the browser
  • Resist Fingerprinting changes timezone and window size reporting, which confuses a few web apps
Downloadable app Downloadable app
Open source Open source
License: MPL-2.0 License: MPL-2.0
No account needed No account needed
Needs internet Works offline

Checked September 21, 2026

Checked September 20, 2026

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