Spotalike - Spotify playlist with similar songs, according to Last.fm
Ushahidi - Ushahidi gathers data from various sources and reports incidences around the world in real time.
MusaicFM - An iTunes like screen saver based on Spotify and Last.fm
neptunes. - We help both listeners and musicians to find each other.
Bowtie - Bowtie is a desktop accessory that allows you to see and control your music (iTunes, Spotify...
Startup Escape - A real-life startup themed escape room in SF!