TenFourFoxG5 6.0.1 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The following version: 6.0 is the most frequently downloaded one by the program users.
The TenFourFoxG5 installer is commonly called TenFourFoxG5-6.0.1.app.zip. The program lies within Internet & Network Tools, more precisely Browsers. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. This app's bundle is identified as com.floodgap.tenfourfox. The actual developer of this free software for Mac is Contributors to TenFourFox.
From the developer:
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 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.
You may want to check out more Mac applications, such as GlowWorm, SunriseBrowser or acmereader, which might be similar to TenFourFoxG5.