projectM - projectM is an LGPL'ed reimplementation of Milkdrop under OpenGL.
My Year Photo Book - All your year’s Facebook & Instagram moments, in a book!
MilkDrop - 3D audio visualization plugin, compatible with WinAmp plugin API
The Twayback Machine - View your friends' old tweets for fun and trolling
Magic Music Visuals - Fully-customizable and highly responsive visuals for live and recorded audio & MIDI.
Timehop - Your digital life history