Netflix Party - Netflix Party is an extension for watching Netflix remotely with friends and family for movies nights with that long-distance special someone.
DUSK - Anonymous live video
StreamParty - StreamParty is a watch communiry, that allows you to watch video streams in sync with the people you care about, on multiple services.
Facebook Live Video and Collages - Show your friends what you’re seeing in real time
Metastream - Watch streaming media with friends
Periscope on Twitter for iOS - Stream live video inside your tweets