Kast

Kast is a program for Mac that you can use to share a bunch of streaming content to watch live with a group of friends. Simply create a room within the app and add the rest of the users so you can watch a movie together, follow a video game, or listen to a song.

As soon as you enter the main screen you'll notice open broadcasts from a wide number of users. If you don't want to follow other people's content, you can simply create your own. All you have to do is create a party room and add your friends.

One of the most entertaining aspects of Kast is its chat system that you can use to keep in touch with your friends at all times. This feature is very useful if, for example, you're watching a movie together and you want to discuss certain scenes or situations.

Kast lets you easily broadcast the content you're watching on your Mac. Plus, the fact that you can chat via a built-in chat boosts the fun in each of your virtual parties.