The UNIX System, UNIX System

Description: The Open Group holds the UNIX trademark in trust for the industry, and manages the UNIX trademark licensing program.

Keywords: UNIX certification, UNIX trademark, UNIX98, UNIX95, Spec1170, UNIX branding, X/Open Branding, open software, POSIX, ISO, standards, software standards, procurement, product information

Unix.org has 4 URLs listed in 4 Dmoz categories.

UNIX System Interface Tables
These pages contain tables of all the Commands and System interfaces defined in UNIX 98, complete with an indication of their availability in UNIX 95, the ISO POSIX-1 standard, the ISO POSIX-2 standard, the ISO C standard, SVID3 and 4.3BSD.
http://www.unix.org/apis.html
Top/Computers/Software/Operating_Systems/Linux/Projects/Standards

Go Solo 2 - The Book
Authorized guide to version 2 of the single UNIX specification.
http://www.unix.org/gosolo2/
Top/Computers/Software/Operating_Systems/Unix/Administration/Books

Online Single Unix Specification
Ordering page for the Open Group's Single Unix Specification.
http://www.unix.org/online.html
Top/Computers/Software/Operating_Systems/Unix/Documentation

The Unix System: History and Timeline
Historical summary and timeline.
http://www.unix.org/what_is_unix/history_timeline.html
Top/Computers/Software/Operating_Systems/Unix/History