Commits.io - Create a poster for your office using your code
Parallel - Listen to music with friends over Spotify at the same time
Codenail - Create art with your code and logo and order a poster of it
Join My Playlist - Listen to music live together with your friends in Spotify.
SpoTwitter - Shows currently playing music on Spotify on your Twitter.
TuneMeet - Chat with people who are listening to the same song