Spotify - Map shows when two people play same song at same time
Ampache - Web ( HTTP centralized ) based audio/video streaming application
Last.fm - The world's largest online music service. Listen online, find out more about your favourite artists, and get music recommendations, only at Last.fm
YouTube Music - YouTube Music is a streaming app primarily designed for Android and iOS mobile devices. The app lets individuals search for music from their favorite artists, enjoy playlists, and access 30 million musical tracks.
SoundCloud - Enjoy music & follow favourite artists
Navidrome - Music Server and Streamer compatible with Subsonic/Airsonic.