Very aesthetic and simple, it has the exact same functions as Rabbit.

MetaStream allows you to use Youtube but also Crunchyroll and Google.
No need to sign up to set a private/public room to invit your friends and the way the chat works is very handy.

And most important, something that Rabbit decided to remove this option long time ago.
When someone join your room, you have the right to accept / refuse this person to join.