Magic Music Visuals - Fully-customizable and highly responsive visuals for live and recorded audio & MIDI.
Blinkist - Key insights from 6,000+ bestselling books and podcasts
projectM - projectM is an LGPL'ed reimplementation of Milkdrop under OpenGL.
Four Minute Books - Making you smarter in 4 minutes or less.
Kauna - Kauna is a music visualizer. Kauna renders any sound reproduction in system.
12min APP - Free reading app for summaries of nonfiction books.