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Firefox vs Vanadium: catalog facts
Firefox	Vanadium
Free Free software from a non-profit-owned foundation. Mozilla sells separate subscription…	Free The open-source browser is available without a license fee.
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	Hardening that goes beyond browser settings into the Chromium build itself Provides the system WebView, so other apps benefit too
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	Intended for GrapheneOS; it is not a general Android browser No extension support
Downloadable app	Downloadable app
Open source	Open source
License: MPL-2.0	License not stated
No account needed	Not stated if an account is 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 September 22, 2026

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