Yes, Mozilla dropped Tiger and PowerPC. Yes, Apple's been screwing you for years. Here's your chance to fight back: you can now get the world's most advanced browser right on your beloved Power Mac, maintained by fellow Power Mac users, endorsed by fellow Power Mac users. It even runs on 10.4. And it's free. Mozilla Public License open source.

Why is this TenFourFox and not Firefox? Because even though it uses the Firefox code base, it's not Firefox. It uses code tuned for 10.4 (and compatible with 10.5), adds new PowerPC-specific improvements and restores the glue necessary to get most of modern Firefox's advanced features working on our older computers, offered in separately hand-tuned builds for G3, G4/7400, G4/7450 and G5 processors to get the most from your specific computer.

Nevertheless, it's still almost all the same code as today's Firefox and has nearly all the same features, including dramatically faster JavaScript, WebM video, compatibility with most Firefox add-ons, and HTML 5 and CSS 3 support. You'll find TenFourFox significantly faster overall than Firefox 3.6, yet it supports so many more new and emerging Web features that your dear old Power Mac will still be able to do what you need online for years to come.

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

Editor's Note: TenFourFox comes in tuned builds for specific processor families. The download link leads you to the author's page where you can select the correct version.

Requirements:
OS X v10.4.11 - 10.5
Intel Macintoshes are not supported, but the G3 build is known to run under Rosetta in 10.4.11, 10.5.8 and 10.6.8.
PPC