Slackmojis - A directory of the best custom slack emojis
Social Fixer - Social Fixer for Facebook plugs into your browser and improves the existing Facebook.com web site.
Discord Emoji - Iconfinder, but for emoji.
F.B. Purity - F.B. Purity is a browser extension / add-on that lets you clean up and customize Facebook.
Emoji Builder - Create your own emoji in no time 💨
SpaceHey - SpaceHey is a retro social network focused on privacy and customizability. It's a friendly place to have fun, meet friends, and be creative. Join for free!