Blender - Blender is the open source, cross platform suite of tools for 3D creation.
MadMapper - The Mapping Software
Mandelbulber - A 3D fractal renderer.
Resolume - Resolume is an application for live video performances.
TouchDesigner - TouchDesigner is a visual development platform that equips you with the tools you need to create stunning realtime projects and rich user experiences.
Linux Show Player - Sound player designed for stage productions