Metastream - Watch streaming media with friends
123MoviesGo - 123Movies - Watch Movies Online for Free in HD
Watch2Gether - Watch2Gether is an app that allows multiple people to watch the same content simultaneously and interact with each other while watching.
WatchList: Movies - WatchList: Movies app assists you in making a discussion group, and can engage in discussion with your friends and family members by sending them invitations to join the discussion group.
StreamParty - StreamParty is a watch communiry, that allows you to watch video streams in sync with the people you care about, on multiple services.
GoMovies - Watch Top Movies Online For Free.