MintPPC is a Linux distribution for 32 and 64 bits PowerPC computers which is based on Linux Mint LXDE, ported to Debian/PPC. The idea behind MintPPC is to have a fast good looking lightweight desktop manager, which runs well on older G3, G4 and G5 machines. MintPPC is directed to desktop users who want a very fast system without the need to install software themselves. It is easy to use and it is complete. An advantage of this distribution for PowerPC users is that a few bugs, which are always present in Debian/Ubuntu, have been overcome.
via About Linux MintPPC | Linux MintPPC.