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Firefox vs Fulguris: catalog facts
Firefox	Fulguris
Free Free software from a non-profit-owned foundation. Mozilla sells separate subscription…	Free Free and open source.
Windows, macOS, Linux, Android, iOS	Android
Total Cookie Protection stops cookies following you between sites An engine that is not Chromium, which matters for the health of the web	Open source with a long commit history Built-in ad blocking
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	Android only Smaller project with less documentation than mainstream browsers
Downloadable app	Downloadable app
Open source	Open source
License: MPL-2.0	License: MPL-2.0 / CPAL-1.0
No account needed	No account needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked October 1, 2026

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