Compare software

Firefox ESRLibreWolf
Free

Free and open source; Mozilla offers optional paid professional support for organisations.

 Free

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

Windows, macOS, Linux Windows, macOS, Linux
  • Long-term stable feature set for managed deployments
  • MSI and PKG installers plus group policy templates
  • Deletes cookies and website data on close by default
  • Ships uBlock Origin with custom default filter lists and strict tracking protection
  • New features arrive later than in regular Firefox
  • Mainly aimed at organisations rather than home users
  • 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
Not stated if it works offline Works offline

Checked September 24, 2026

Checked September 20, 2026

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