Firefox is built around clear privacy principles. We’re upfront about what data we collect, what we don’t, and how we use it.

Mozilla Foundation is building a future where technology is powered by people, and open by design. That’s why we fuel community-centered tech through advocacy, education, funding, and innovation …

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 …

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4 days ago · Mozilla Firefox is an internet browser maintained by the Mozilla Foundation. It is an excellent alternative to Google Chrome, Edge, Opera, or Safari. Because of its free and open-source …

Apr 22, 2026 · Mozilla says Firefox 150 patches 271 vulnerabilities found with Anthropic’s restricted Mythos AI, highlighting how quickly AI-driven bug hunting is accelerating.

Firefox Source Docs is our primary documentation repository Nightly development builds can be downloaded from Firefox Nightly page If you have a question about developing Firefox, and can't find …

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

Firefox is built to put you back in control. Firefox is no longer supported on Windows 8.1 and below. Please download Firefox ESR (Extended Support Release) to use Firefox. The Firefox browser for …

Apr 21, 2026 · The Firefox team doesn’t think emerging AI capabilities will upend cybersecurity long term, but they warn that software developers are likely in for a rocky transition.