Wacht.tv - Reddit meets MTV, discover music videos!
Spotify - Map shows when two people play same song at same time
spool.tv - Just music videos.
Kaizen - Kaizen is an ElasticSearch GUI for Windows, Mac and Linux, written in JavaFX as a cross-platform desktop application.
DiscoverWeekly.dev - The playlists made by devs, every Wednesday
MusicHarbor - MusicHarbor is an app that helps you stay on top of new music releases, music videos, events, and news from all your favorite artists and record labels.