Apophysis - Apophysis is a fractal flame editor and renderer for Microsoft Windows.
projectM - projectM is an LGPL'ed reimplementation of Milkdrop under OpenGL.
Xaos - XaoS is an interactive fractal zoomer.
Magic Music Visuals - Fully-customizable and highly responsive visuals for live and recorded audio & MIDI.
ChaosPro - Windows 95/98/NT fractal generation and exploration program with 3D, network, animation, 24 bit support, compatible to FractInt, compatible to UltraFractal.
Kauna - Kauna is a music visualizer. Kauna renders any sound reproduction in system.