Hyperbeam is a shared browsing site that lets you surf the web and watch TV shows and movies together with the people you care about while apart. Free to use (with optional Premium). No download necessary.
WWDC Together is a free place to watch and hangout during WWDC. We can now view upcoming and previous sessions via modern playback, with a chatroom for each session. Hope this provides a similar WWDC vibe.
Vadio is a platform that allows you to share what you are watching in youtube in real time. Share your channel link with your friends or whatever you want and the users that connect to your channel can see what...
Watchout allows you to watch any Youtube and Vimeo videos with your friends and family, all in perfect synchronization for unlimited audiences. No sign up needed. Enjoy the service for free and anonymously.