Built tough. Built secure. Because your security is your responsibility.

No one at Apple is maintaining Tiger or Leopard anymore. The Genius Bar has told you to stop embarrassing them by bringing your TiBook in for service. The neighbour's kid thinks a PowerPC is a Core i7 with an extra power supply. And you might think that since the world's moved on, they're not going to bother breaking into your old Mac. Well, think again. Even if the latest malware plaguing Intel Macs and Windows PCs won't run on your Power Mac, your security online could still be jeopardized by out-of-date browser software. Your connection to your bank might be easier to snoop than you think. You might be trusting servers you shouldn't trust anymore. Someone might find a way to sneak cookies out of your browser and impersonate you.

As modern life moves even more online, and fewer and fewer browsers for Power Macs are maintained, make sure your browser is as up-to-date as possible. TenFourFox is built on time-tested Mozilla security and encryption -- the same security software used by both Firefox and Google Chrome -- and receives all the security updates Firefox does. No, it's not an iron-clad guarantee you'll be safe: your security is your responsibility. But it's better than you'll get anywhere else. And we trust it enough to use it ourselves.

The fastest JavaScript on Power Macs.

TenFourFox was the first (and so far the only) browser to bring you accelerated JavaScript on Power Macs. Not just an interpreter, our original tracing just-in-time "JIT" compiler turned JavaScript into PowerPC machine code, making it faster than Safari 5 and over twice as fast as Firefox 3.6, as proven on both the SunSpider and Dromaeo industry-standard JavaScript benchmarks. But we weren't satisfied with that. TenFourFox 10 introduced our method compiler, trouncing even the fastest interpreter by over three times using Mozilla's JaegerMonkey and type inference technologies, and TenFourFox 17 makes it even faster. Not only have we tuned our JIT specially for your processor (even the G5), but our JIT also works on Leopard and Tiger even on the lowliest G3, allowing any Power Mac to pound through today's JavaScript-intensive web applications faster than any other PPC browser and letting you do more than you ever thought before, in less time. Wow, that was fast!

Testing done on 10.5.8 for Safari 5. Result is best of two individual runs. Performance may vary with energy saver settings and available memory. Dromaeo includes both SunSpider and Google V8 tests in its final score. 7450 build used for TenFourFox. Stock builds used for other browsers.

AltiVec™ acceleration, from server to screen.

Remember how AltiVec was going to change the world? Well, it did, because everyone else did it too and now vector and SIMD extensions are in every new Intel CPU and every new browser. But no one brought those new algorithms back to the PowerPC browser world ... until now. In TenFourFox 4, we brought you pixel compositing and WebM video accelerated by AltiVec. In TenFourFox 5, we brought you scaling and colour conversion powered by AltiVec. In TenFourFox 6, we even accelerated HTML itself, and in TenFourFox 8, we not only made that faster but added accelerated JPEG decoding too. Every step of the content chain is faster already, and will get faster in the future. It's the power your G4 and G5 Power Macs always had that TenFourFox finally unlocks. (Don't worry, G3 owners, you can still enjoy all the other benefits of TenFourFox.)

Scene from Big Buck Bunny used under Creative Commons © 2008, Blender Foundation / www.bigbuckbunny.org. US 395 photograph © 2011 Cameron Kaiser. All rights reserved. Used by permission. AltiVec and the AltiVec logo are trademarks of Freescale Semiconductor, Inc. VMX is a trademark of International Business Machines Corporation.

You asked for it. Now you can get it. Download TenFourFox 17.0.11.

So what are you waiting for? Download TenFourFox and accelerate your Power Mac's Internet experience today. We're (almost) exactly the same code as Firefox ESR 17, and surf the same sites, but with the code needed to keep your Power Mac functional and fast. 17.0.11 is a security update for TenFourFox. This will be the final release of TenFourFox 17. Future releases will be based on ESR 24. Are you up to date?

Be sure to read the Release Notes, the official TenFourFox FAQ and the list of known bugs before you begin. Then pick the version for your processor (older versions also available, or securely download files over SSL):

• TenFourFox for G3 processors
• TenFourFox for G4 processors: 7400 | 7450 ("G4e") (Which one do I use?)
• TenFourFox for G5 processors

Double-click the .zip file to decompress it, and copy the application to your hard disk.

Please note: TenFourFox supports add-ons, but not plugins (read why). If you require using Flash or Java, do not use TenFourFox. (However, plugins are not extensions. Most add-ons and extensions will work.)

Remember, TenFourFox is free software, "as is" without warranty of any kind, including merchantability or fitness for a particular purpose. There is always the risk of system instability, data loss or security compromise. You accept these conditions unconditionally by downloading and using TenFourFox. We eat our own dog food, but we (and you) do so at (y)our own risk. Find out more about the Mozilla Public License and other licenses governing this software.

Please, do not send bug reports by E-mail -- use our TenFourFox Tenderapp Support site. Support cannot be furnished over E-mail due to volume of mail received and the inability to easily track concurrent issues. You are also welcome to post constructive comments and requests publicly on the developers' blog or file issues with our Google Code project. Respectfulness of our limited resources and understanding of our triage process is a virtue.

Keep up with our progress on the TenFourFox Development blog!