Autodesk User Group International [IA][Direct] -
Officially recognized user group. It is an independent, international organization of Autodesk product users, run by users, for users.
CATIA Operators Exchange [IA][Direct] -
An international non-profit organization consisting of CAD/CAM/CAE professionals involved with companies who are users of the Dassault Systemes CATIA software.
Unigraphics Users Group [IA][Direct] -
Non-profit organization facilitating information sharing between Unigraphics Solutions Inc. and client companies utilizing its software.