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LibreWolfZen Browser
Free

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

 Free

Free and open source, funded by donations.

Windows, macOS, Linux Windows, macOS, Linux
  • Deletes cookies and website data on close by default
  • Ships uBlock Origin with custom default filter lists and strict tracking protection
  • Vertical tabs, workspaces and split view built in, no extensions needed
  • Firefox engine, so Firefox extensions and containers work
  • 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
  • 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
Works offline Needs internet

Checked September 20, 2026

Checked September 21, 2026

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