Sticker.Place API - Get stickers for your app
Slackmojis - A directory of the best custom slack emojis
GIPHY Sticker Embed - GIPHY powered sticker functionality for sites everywhere.
Discord Emoji - Iconfinder, but for emoji.
Holographic Stickers by Sticker Mule - Rad stickers with futuristic rainbow shine.
Emoji Builder - Create your own emoji in no time 💨