Since 1975, the USENIX Association has provided a forum for the communication of the results of innovation and research in Unix and modern open systems. It is well known for its technical conferences, tutorial programs, and the wide variety of publications it has sponsored over the years.

USENIX is the original not-for-profit membership organisation for individuals and institutions interested in Unix and Unix-like systems, by extension, X, object-oriented technology, and other advanced tools and technologies, and the broad interconnected and interoperable computing environment.

USENIX's activities include an annual technical conference; frequent specific-topic conferences and symposia; a highly regarded tutorial program covering a wide range of topics, introductory through advanced; numerous publications, including a book series, in cooperation with The MIT Press, on advanced computing systems, proceedings from USENIX symposia and conferences, the quarterly journal "Computing Systems", and the biweekly newsletter; "login: "; participation in various ANSI, IEEE and ISO standards efforts; sponsorship of local and special technical groups relevant to Unix. The chartering of SAGE, the System Administrators Guild as a Special Technical Group within USENIX is the most recent.

Usenet newsgroup: news:comp.org.usenix.