MilkDrop - 3D audio visualization plugin, compatible with WinAmp plugin API
Planted - Planted is a mobile and online recruitment platform that matches recent graduates with non-technical roles at high-growth companies.
projectM - projectM is an LGPL'ed reimplementation of Milkdrop under OpenGL.
Sequoia One - Outsourced HR designed exclusively for high tech startups.
Magic Music Visuals - Fully-customizable and highly responsive visuals for live and recorded audio & MIDI.
Lab 8 Ventures - Lab 8 provides project-based recruiting to companies.