BandNext - Discover bands that sound similar to artists you already love with BandNext. A single click saves your results to a Youtube playlist.
humit - A social networking app for music sharing and discovery.
Spotify - Map shows when two people play same song at same time
Songlink - Share music with anyone.
stats.fm - With the click of a button you'll be logged with your Spotify account and you'll instantly gain access to a valhalla of cool stats and insights.
Son.gg in Slack - Share music with your team in Slack