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Fast Internet Browser vs Firefox: catalog facts
Fast Internet Browser	Firefox
Free Installed from the Microsoft Store; the site does not mention a price.	Free Free software from a non-profit-owned foundation. Mozilla sells separate subscription…
Windows	Windows, macOS, Linux, Android, iOS
Runs on Xbox as well as Windows PCs Built-in ad blocker	Total Cookie Protection stops cookies following you between sites An engine that is not Chromium, which matters for the health of the web
Users report slowdowns with more than four tabs open Developer and engine are not stated on the site	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
Not stated if an account is needed	No account needed
Needs internet	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 20, 2026

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