CRUX PPC: http://cruxppc.org/
From their site:
CRUX PPC Devel
CRUX PPC is a port of CRUX for the Power Architecture® platform. It’s a GNU system with a Linux kernel and runs on Apple NewWorld (both 32 and 64bit) PowerPC, YDL Powerstation, Genesi PegasosII and EFIKA, ACube Sam440ep, IBM RS/6000 CHRP and pSeries servers. CRUX PPC includes support for laptop-specific features, extended hardware support and server tools.
CRUX PPC is a volunteer driven no-profit project based on the releases of CRUX for x86. It contains software written by a lot of different people, each software comes with its own license, chosen by its author. Parts written by CRUX PPC Team are to intend as free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation either version 2 of the License, or (at your option) any later version.
Unlike other distributions, the primary goal of CRUX is not to be the most popular (read: biggest number of users) or to put as many features as possible into the system. The idea is rather to build a streamlined distribution, targetted at a specific audience which in turn gets a system without compromises. The result may not be the best distribution for everybody, but as mentioned above, that’s not the goal. If you’re part of the target audience however, you might enjoy running CRUX just as much as we do.
Templates and Config Templates for the machines below http://cruxppc.org/Main/ConfigTemplates
(PPCLINUX editor's note: Crux-PPC supports more hardware than just those listed below, and with newer kernels..)
Crux-PPC iBook Edition 2.2rc1 - PowerBook G4 12″ 1.33GHz (confs by nullpointer)
- kernel 188.8.131.52
Crux-PPC iBook Edition 2.2rc1 - iBook G4 12″ 1.33GHz (confs by acrux)
- kernel 2.6.20-rc5
Crux-PPC iBook Edition 2.2rc1 - iBook G4 12″ 1.33GHz (confs by cjg)
- kernel 184.108.40.206
Crux-PPC 2.0 - iMac G3 revB 350MHz, multimedia keyb (confs by nullpointer)
- kernel 2.6.9