Association is the Advanced Computing Technical Association. It was founded in 1975
, focusing primarily on the study and development of UNIX
and similar systems. It has since grown into a respected organization among practitioners, developers, and researchers of computer operating systems
more generally. It sponsers several conferences and workshops each year, most notably the USENIX Annual Technical Conference and LISA
, a conference devoted to systems administration.
USENIX has a subgroup, SAGE the System Administrators Guild.