"Mac software developer Terra Soft Solutions (TSS) said its
Yellow Dog Linux distribution is compatible with Motorola's PowerPC
7400 CPU aka G4."
"The Mac-oriented distribution of the open source OS is
currently available in a server-oriented version, dubbed Champion
Server. It was recently updated to release 1.1 to add support for
version 2.2.6 of the Linux kernel, glibc 2.1.1, egcs 1.1.2, KDE
1.1.1 and Gnome 1.0."
"That 1.1 release will run on the new 400MHz Power Mac G4 out of
the box, said TSS."