Resolume - Resolume is an application for live video performances.
MadMapper - The Mapping Software
Millumin - Software to create audiovisuals shows.
Linux Show Player - Sound player designed for stage productions
HeavyM - Simple video mapping software with a huge library of effects.
TouchDesigner - TouchDesigner is a visual development platform that equips you with the tools you need to create stunning realtime projects and rich user experiences.