At your next party, everybody controls the music with the OutLoud app for Android and iOS

JQBX lets you play music online through Spotify with anyone, anywhere. Be a virtual dj, and discover new music by listening together in real time.

Festify is a free Spotify-powered party app that lets your guests choose which music should be played using their smartphones.

Raddio is a collaborative real-time radio w/ friends. While listening radio you can chat, add new songs to radio and enjoy for hours. No sign up, no fees! Step 1. Click Start Radio Step 2. Share this link to your friends Step 3. Enjoy with friends!