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Google Chrome vs Firefox ESR: catalog facts
Google Chrome	Firefox ESR
Free Free to download and use. The software is closed source.	Free Free and open source; Mozilla offers optional paid professional support for organisations.
Windows, macOS, Linux, Android, iOS	Windows, macOS, Linux
Site compatibility is effectively guaranteed, updates arrive every four weeks, and the extension library is the largest…	Long-term stable feature set for managed deployments MSI and PKG installers plus group policy templates
The shipped browser is proprietary rather than the open Chromium it is built on, and it ties closely…	New features arrive later than in regular Firefox Mainly aimed at organisations rather than home users
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
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 24, 2026

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