JWildfire - Modern ui, soft developed and ugraded by andreas maschke for design 2d and 3d fractal flames. Very nice app and powerful.
Magic Music Visuals - Fully-customizable and highly responsive visuals for live and recorded audio & MIDI.
Apophysis - Apophysis is a fractal flame editor and renderer for Microsoft Windows.
MilkDrop - 3D audio visualization plugin, compatible with WinAmp plugin API
Frax - Frax is an art program that puts the “equations of nature” in the palm of your hand.
Kauna - Kauna is a music visualizer. Kauna renders any sound reproduction in system.