Shazam - Shazam is a mobile app that recognizes music and TV around you.
EarTrumpet - Volume Control for Windows
Listnd - Listnd is a social platform for tracking, rating, and reviewing the music you listen to, and for sharing your thoughts with your friends and the world at large.
Volume2 - Volume2 is an advanced Windows audio mixer, a complete replacement for the standard Volume Control.
Spotify - Map shows when two people play same song at same time
Sound Control - App-specific volume control