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Firefox vs Microsoft Edge: catalog facts
Firefox	Microsoft Edge
Free Free software from a non-profit-owned foundation. Mozilla sells separate subscription…	Free Free to download and use. The software is closed source.
Windows, macOS, Linux, Android, iOS	Windows, macOS, Linux, Android, iOS
Total Cookie Protection stops cookies following you between sites An engine that is not Chromium, which matters for the health of the web	Vertical tabs, tab groups, sleeping tabs and a built-in PDF reader are standard, and it runs Chrome extensions…
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	The browser Microsoft ships is proprietary, and it pushes Bing, Microsoft accounts and a growing set of promoted…
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 22, 2026

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