StyleMac.com

Finally, the G5 Optimized Firefox builds are back. I use Safari most of the time because it boots faster and feels faster on my Mac, but there’re certain situations where using Firefox is necessary.

This G5-optimized Firefox-build does run faster on G5 computers as the compiler generated sourcecode which uses the extended features of the G5, so it boots faster and runs faster.
This piece of software is a godsend especially if you have to (or want to) use Firefox a lot, so be sure to fetch it fast.