Metastream - Watch streaming media with friends
BigScreen VR - Your desktop in virtual reality, with friends; play games, watch movies, and hangout in VR.
Watch2Gether - Watch2Gether is an app that allows multiple people to watch the same content simultaneously and interact with each other while watching.
Virtual Desktop - Use your computer in VR
StreamParty - StreamParty is a watch communiry, that allows you to watch video streams in sync with the people you care about, on multiple services.
VRidge - Play PC VR games inside your mobile VR headset.