Mozilla Firefox 4.0.1 Final

Mozilla Firefox 4.0.1 Final, what makes Firefox different? Most importantly, we’re open. That means anyone around the world (and we have thousands of experts watching our back) is able to look into our code and find any potential weak spots in our armor. And when we hear about a problem, we roll up our sleeves and get to work fixing it right away. It’s in your best interest (and ours) to take care of the issue, even if it means admitting we’re a little less than perfect.

The TraceMonkey javascript engine brings screaming fast performance to Firefox 3.5. With javascript that's more than twice as fast as Firefox 3 and 10x faster than Firefox 2, you’ll be able to see the difference without breaking out your stopwatch.

Faster, Safer, Smarter, Better
Things move quickly online, and we’ve beefed up the engine that runs Firefox to make sure you can keep up: Firefox 3.5 is more than twice as fast as Firefox 3, and ten times as fast as Firefox 2. As a result, Web applications like email, photo sites and your favorite social networks will feel snappier and more responsive.

More Ways to Keep You Safe
Keeping you safe while you surf is our top priority, which is why we’ve upgraded our anti-phishing and anti-malware technologies and have added private browsing and “forget this site” options to ensure your privacy. Plus, our open source security process means we have experts around the globe working around the clock to keep you (and your personal information) safe.

One Size Doesn’t Fit All
Everybody uses the Web differently, so why should your browser be exactly like the next guy’s? Whether you’re into chatting, cooking or coding, Firefox has more than 6,000 add-ons to help you customize it to fit your exact needs.

Advancing the Web
We’ve been working hard to make sure Firefox 3.5 brings you the best of the modern web. With new features like private browsing, tear-off tabs and enhancements to the Awesome Bar, plus major performance enhancements, you’ll enjoy life on the cutting edge.

Download: Mozilla Firefox 4.0.1 Final for Windows (7.94 MB)
Download: Mozilla Firefox 4.0.1 Final for Linux (9.69 MB)
Download: Mozilla Firefox 4.0.1 Final for MacOS (18.5 MB)