ShareTube - Watch YouTube, synced with friends.
&chill - Watch YouTube & Twitch videos with people online
Showgoers - Showgoers is a website dedicated to watching Netflix movies together with friends or loved ones who are not sitting on the same PC.
Netflix Party - Netflix Party is an extension for watching Netflix remotely with friends and family for movies nights with that long-distance special someone.
Jelly Party - Watch anything together.
Tradecraft - Play Codenames online with friends.