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Firefox vs Flow Browser: catalog facts
Firefox	Flow Browser
Free Free software from a non-profit-owned foundation. Mozilla sells separate subscription…	Free A Raspberry Pi preview is offered as a download; the page does not state a price.
Windows, macOS, Linux, Android, iOS	Linux
Total Cookie Protection stops cookies following you between sites An engine that is not Chromium, which matters for the health of the web	Independent engine not based on Chromium, WebKit or Gecko Multithreaded layout that scales with CPU cores
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	Public download is a preview for the Raspberry Pi Aimed mainly at embedded and TV products rather than everyday desktop use
Downloadable app	Downloadable app
Open source	Closed 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 24, 2026

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