See also:

• Computers: Software: Operating Systems: Education  (12)
• Computers: Software: Operating Systems: Network: Distributed: Plan 9  (13)
• Computers: Software: Operating Systems: Open Source  (20)

ACM Crossroads: Operating Freely - - Description of the 3 major, freely available, Unix-like operating systems: Linux, FreeBSD, NetBSD. Crossroads is the student magazine of the ACM.

COTSE-Mini UNIX Distributions - - Links to 2 dozen mini Unix distributions: mostly Linux, also FreeBSD, SCO, Solaris MINIX, MINIX.

Linux and BSD, Open Source Giants - - Succinct, clear, non-technical introduction to Linux and BSD, focus: how they are relevant to business.

Open Source Unix and Related Software Projects - - Small page of logos and links to resources, distribution channels for the most popular, freely distributable Unix, and a few other projects. FREENIX links in English, Français, Norsk.

PIOS: Pleasant Interactive Operating System - - Free Unix clone developed by PIE Software Inc., for x86 PC compatibles, to give a stable multi-user high security platform for use as a network server, programming work-horse, or desktop system; designed so even complex tasks are easy.

Thix - - Unix kernel written in 1994-95; almost full implementation of POSIX.1 standard, IEEE Std 1003.1-1988. Goal: mainly to learn OS design, architecture, kernel algorithms, resource allocation, process scheduling, and memory management; free software has been compiled for it. [Open Source, GPL.