CoverSutra - CoverSutra gives you a handy and attractive way to control iTunes without ever leaving your current...
Sleeve - Your currently playing track displayed right on your desktop
Muzzy - it’s a tiny and gorgeous iTunes companion that lives on your menu bar. For Mac OSX, its free!
Uber Ride Request Widget - Embed the Uber experience in your app in a few lines code
SpotiMy - Play/Pause and Next/Previous functions for Spotify directly on your Menu Bar!
Musicspace - Music catalog management & protection for musicians.