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Firefox vs Servo: catalog facts
Firefox	Servo
Free Free software from a non-profit-owned foundation. Mozilla sells separate subscription…	Free The open-source software is available without a license fee. Hosting, hardware and…
Windows, macOS, Linux, Android, iOS	Windows, macOS, Linux, Android
Total Cookie Protection stops cookies following you between sites An engine that is not Chromium, which matters for the health of the web	Provides a shell for trying the engine on several platforms.
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	It is a prototype engine rather than a finished everyday browser.
Downloadable app	Downloadable app
Open source	Open source
License: MPL-2.0	License: MPL-2.0
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.