Plane9 - Plane9 is a revolutionary 3d visualizer where you never have to settle for just one view ever again.
Journalistic - A simple, yet powerful micro journaling app
MilkDrop - 3D audio visualization plugin, compatible with WinAmp plugin API
Day One - A simple journal application for the Mac, iPhone, and iPad. AboutTo learn more about Day One, see these two excellent reviews . PublishPublish is not available in Day One 2.
Magic Music Visuals - Fully-customizable and highly responsive visuals for live and recorded audio & MIDI.
Punkt - Private & secure one-sentence journaling