Picaboo - Picaboo is a web-based image publishing and printing service that allows you to create personalized photo books, cards, and scrapbooks.
Netflix Party - Netflix Party is an extension for watching Netflix remotely with friends and family for movies nights with that long-distance special someone.
Juicebox - Spectacular HTML5 Image Galleries Made Easy
&chill - Watch YouTube & Twitch videos with people online
novaGallery.org - Beautiful php image gallery - easy to use, with modern responsive design, private mode, themes, languages
Scener - A virtual movie theater to watch content with your friends