Alternatives:
- MkLinux, now part of The Research Institute at Grenoble, is still available from non-Apple mirror sites. The MkLinux web site at http://www.mklinux.org contains links to all non-Apple sites where MkLinux can be downloaded.
- MachTen, from Tenon Intersystems, http://www.tenon.com, is a BSD Unix implementation that runs as a Mac OS application. Mac and Unix applications can be run side-by-side.
- LinuxPPC is a non-Apple version of a Unix-style operating system that is available from http://www.linuxppc.org
If intercommunication with non-Mac OS X Server Unix-compatible systems from within the Mac OS is your goal, an X11 server for Mac OS such as Apple's MacX, White Pine's eXodus, or Tenon's X-Ten are some of the solutions available. An X11 server gives a workstation the ability to display and interact with X11 applications ("clients": backwards from usual terminology) running on traditional Unix-compatible servers or hosts such as Sun, HP, Cray, linux, SCO, and many others.
There are also a variety of Unix-compatible systems that are available for 68000 series Mac OS computers.