MorphOS, the lightweight OS (which also can run AmigaOS 68k Software instantly) is now out for MacMini G4, PowerMac G4, PowerBook G4, eMac G4 and now PowerMac G5 support is on its way. You’r old PPC Mac becomes useable again! And be sure it will be supported, not like Apple and PPC.
Here is the status report of the PowerPC G5 port of MorphOS!
If you also got a G4 PPC Mac, then Download it here!