Partyhero - Pass your friends the aux!
Watch2Gether - Watch2Gether is an app that allows multiple people to watch the same content simultaneously and interact with each other while watching.
Join My Playlist - Listen to music live together with your friends in Spotify.
TogetherTube - to watch videos with other people online
OutLoud Social Jukebox - Control the music with your friends in real-time
Syncplay - Syncplay is a different kind of entertainment platform.