Pick a Free OS

Minix

Minix1 Website

This is the most up-to-date and active Minix website that can be found on the web. It is maintained by Al Woodhull who co-wrote the second edition of the "Operating Systems: Design and Implementation" book with Minix's original author.

MINIX license change

At this point, for most intents and purposes, MINIX is effectively no different than being in the public domain. You can do whatever you want with it.

Minix

MINIX is a free UNIX clone