LISA is the USENIX special interest group for system administrators. LISA was known officially as the System Administrators Guild until November 2003; from 2003 to 2010, it was known as SAGE.

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In March 2016 it was announced that LISA was being retired.^[1][2]

• Co-sponsors the annual system administration conference, also known as LISA.
• Hosts several technical and professional mailing lists.
• Provides a job listing service.
• Compiles an annual salary survey of system administrators' salaries keyed to many variables.
• Publishes a series of short topics booklets in the field of system administration.
• Establishes and promotes a code of ethics for system administrators.
• Supports local user groups.
• Offers an IRC channel.
• Presents an annual award for outstanding contributions to the field of system administration.^[3]

In June 2004, SAGE was dissolved as a Special Technical Group to prepare for a spin-off from its parent organization, USENIX. On October 27, 2005, the USENIX Board, by a 4–4 vote, failed to approve a motion to progress the separation of SAGE from USENIX, declaring instead that SAGE is better as a suborganization. This contributed to the formation of LOPSA by individuals involved in the aborted spinoff.

• League of Professional System Administrators
• SAGE-AU (Australia)
• System Administrators Guild of Ireland