日本UNIXユーザ会 – Japan UNIX Society [ jus ] - Japanese UNIX Society

Organization uniting Unix users, developers, and researchers in Japan to promote Unix standards and applications.

Austin Common Standards Revision Group

Consortium working on the POSIX standard and specifications for portable operating systems and Unix systems.

BSD Certification Group

Non-profit organization dedicated to establishing a global certification standard for Unix-like BSD operating systems.

German UNIX User Group - GUUG

Professional organization representing Unix and open-source system administrators in Germany.

Indian UNIX User Group - IUUG

Non-profit association promoting Unix-like operating systems, free software, and technical standards in India.

League of Professional System Administrators - Minnesota (LOPSA-MN)

The successor organization to TCSA, a local community for system administrators in the Twin Cities metro area of Minnesota.

The Open Group - UNIX System Certification

Organization maintaining the official trademark and standards organization for certified UNIX operating systems.

The Open Group UNIX Standards

Official home of the Single UNIX Specification and UNIX certification standards

Unix International Historical Archives

Organization archiving early corporate governance and standards bodies of the Unix industry.

Unix Users Association of Greece

Professional society supporting Unix system engineers and open systems in Greece.