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Firefox is no longer supported on Windows 8.1 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox.

Firefox is no longer supported on macOS 10.14 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox.

Firefox Privacy Notice

Mozilla makes browsers, apps, code and tools that put people before profit.

Our mission: Keep the internet open and accessible to all.

Read Our Mission

Corporation. Foundation. Not-for-profit.

Mozilla puts people over profit in everything we say, build and do. In fact, there’s a non-profit Foundation at the heart of our enterprise.

Learn about the Mozilla Foundation

The Mozilla Manifesto

The principles we wrote in 1998 still guide us today. And in 2018, we created an addendum to emphasize inclusion, privacy and safety for everyone online.

Read The Manifesto

A Global View

With offices all over the world, we consider the internet from multiple cultures and contexts.

San Francisco

2000 non-employee guests welcomed each year

Berlin

500 annual attendees to the Berlin speaker series

Toronto

800 bottles of cold brew coffee consumed yearly.