MilkDrop - 3D audio visualization plugin, compatible with WinAmp plugin API
WaiverForever - Electronic waiver system for small businesses
projectM - projectM is an LGPL'ed reimplementation of Milkdrop under OpenGL.
Waiver Electronic - Waiver Electronic is one of the legit and secure platforms to manage online liability waivers accelerating the productivity of your business by making the quick, paperless and secure waiver signup process.
Magic Music Visuals - Fully-customizable and highly responsive visuals for live and recorded audio & MIDI.
WaiverSign - Cloud-based waiver and release of liability signing software