ShareTube is offering a rather simple yet rather useful solution for when you want to watch YouTube videos simultaneously with your friends or family without having to crowd one screen. It lets you create playlists and sync playbacks for everyone in the room. It’s not an entirely new concept but what does set it apart is it isn’t just for music videos. You can create shared video playlists of any YouTube video and talk about each one. Just search for the video you want and you’re good to go.
Source: Lifehacker