Firefox ESR

Mozilla Firefox Extended Support Release is a community-led project that allows organizations to benefit from the speed, flexibility and security of Firefox while getting the support they need.

Firefox ESR is intended for groups who deploy and maintain the desktop environment in large organizations such as universities and other schools, county or city governments and businesses.

Your data stays your business

The Firefox browser is open source, provides Enhanced Tracking Protection and soon will support DNS over HTTPS — all part of our longstanding commitment to data protection.

Deploy when and how you want

With install packages and a wide expansion of group policies and features, deployment is faster and more flexible than ever — and a breeze in Windows and macOS environments.

Choose your release cadence

Get rapid releases to make sure you get the latest features faster, or go extended to ensure a super stable experience.