StiKey - Sticker + Emoji Keyboard. Sticker Marketplace.
MessMoji - Emoji stickers for iMessages
SketchKeys - Learn Sketch shortkeys easily w/ keyboard stickers
Dango - Use emoji, stickers & gifs faster 😄 💬
Zoomyy - Adds a zoom motion to existing photos or videos
Neural Network Generated Illustrations - Create a personalized sticker pack in Allo