StiKey - Sticker + Emoji Keyboard. Sticker Marketplace.
Slackmojis - A directory of the best custom slack emojis
SketchKeys - Learn Sketch shortkeys easily w/ keyboard stickers
Discord Emoji - Iconfinder, but for emoji.
Zoomyy - Adds a zoom motion to existing photos or videos
Emoji Maker - Create custom Emoji based on Twemoji