Get Firefox for Windows, Mac or Linux. Firefox is a free web browser backed by Mozilla, a non-profit dedicated to internet health and privacy.

Mozilla is the not-for-profit behind the lightning fast Firefox browser. We put people over profit to give everyone more power online.

Mozilla Firefox, or simply Firefox, is a free and open-source [12] web browser developed by the Mozilla Foundation and its subsidiary, the Mozilla Corporation. It uses the Gecko rendering engine to display …

Firefox is a free web browser backed by Mozilla, a non-profit dedicated to internet health and privacy.

Take control of your internet with the Firefox browser, wherever you go. Whether you’re looking for an incognito browser, want to use a private search engine, or just need a reliable and fast...

Break free from big tech — our products put you in control of a safer, more private internet experience. Firefox: Get the gold standard for browsing with speed, privacy and control. Thunderbird: Go chaos …

Nov 25, 2025 · Firefox is the most customizable web browser available and the one with the best tools and features to protect your data and privacy.

Download the browser that puts your privacy first — get Firefox for Windows, macOS, or Linux on desktop.

Learn how to update Firefox on Windows, Mac, or Linux. Learn how to make Firefox your default Web browser on Windows 10 and Windows 11. Firefox will show you a "connection is not secure" warning …

Get a sneak peek at the latest Firefox browser features before they’re released. Test your sites against soon-to-be-released Firefox browser features with powerful, flexible DevTools that are on by default.