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HellFireFirefox
Free

Free to download from the GitHub releases page.

 Free

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

Linux Windows, macOS, Linux, Android, iOS
  • Unmodified Firefox behaviour and appearance with compile-time optimizations
  • Build configuration and patcher script are published in the repository
  • Total Cookie Protection stops cookies following you between sites
  • An engine that is not Chromium, which matters for the health of the web
  • Builds only for x86_64 Linux; Windows support was dropped
  • License is not clearly stated in the repository metadata
  • 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
Closed source Open source
License not stated 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.