Bandlab - Capture, nurture, and collaborate on song ideas in the cloud
Watch2Gether - Watch2Gether is an app that allows multiple people to watch the same content simultaneously and interact with each other while watching.
Turntable.fm - Turntable.fm is a social media website developed by Billy Chasen and Seth Goldstein that allows the audience to stream their own music.
TogetherTube - to watch videos with other people online
indiesound - indiesound is a multi-tasking platform developed for online music streaming, helping you to discover, listen and connect with thousands of indie bands or music artists all around the world.
Syncplay - Syncplay is a different kind of entertainment platform.