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