Pennywise - Cross-platform application to open any website or media in a floating window
ShareTube - Watch YouTube, synced with friends.
PiP for Mac - Always on top window preview similar to the popular windows only OnTopReplica
Picaboo - Picaboo is a web-based image publishing and printing service that allows you to create personalized photo books, cards, and scrapbooks.
Shopify - Shopify is a powerful ecommerce platform that includes everything you need to create an online store and sell online. Try it free for 14 days.
&chill - Watch YouTube & Twitch videos with people online