Download Mozilla Firefox, a free Web browser. Firefox is created by a global non-profit dedicated to putting individuals in control online. Get Firefox for Windows, macOS, Linux, Android and iOS today!

Firefox is designed to work with your attention, not compete for it. Reader mode clears distractions from articles, picture-in-picture keeps video out of your way, and pinned tabs keep what matters close …

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.

Choose the browser that prioritizes you, not their bottom line. Don't settle for the default browser. When you choose Firefox, you protect your data while supporting the non-profit Mozilla Foundation, whose …

Firefox is a fast, private browser built to protect you by default. It blocks common trackers automatically, helps keep your data secure, and lets you browse with more peace of mind—without extra...

Mar 24, 2007 · Firefox 🔥 (@firefox) - Posts - The only non-profit-backed, people-first browser. Help: @FirefoxSupport | X (formerly Twitter)

12 hours ago · Anthropic’s Claude Opus 4.6 AI found 22 Firefox vulnerabilities, including 14 high severity, helping Mozilla patch flaws in Firefox 148.

7 hours ago · Mozilla is now working with Anthropic's Frontier Red Team to identify and patch potentially dangerous security vulnerabilities in Firefox. According to Mozilla, the AI company approached them...

Feb 25, 2026 · The newest version of Firefox gives you full control over its built-in "AI" features.

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