http://mac.linux-m68k.org/ Linux port to the m68k-based Macintoshes.

http://emile.sourceforge.net/ This tool allows to boot linux-m68k from a floppy on a Macintosh such as MacII or Quadra 610. With it, you can create a rescue disk, or remove the MacOS partition (needed by the penguin booter) from your HD.

http://macintosh.luddite.ca/ The 68K Macintosh Web Server Directory. All of the web sites listed here are hosted by “obsolete” Macs that, for one reason or another, have managed to avoid retirement.

http://nubus-pmac.sourceforge.net/ Linux/PPC for NuBus Power Macs.

http://www.icedtrip.net/guides/woody_1400.txt Detailed instructions for installing Debian Woody on a Powerbook 1400