Chumpu iMessage Sticker Pack - Animated Chumpu cartoon stickers for iMessage
Giphy - Search all the gifs and make your own animated gif
StickerSDK.Mojitok.com - In-app store of animated emojis, GIFs, and stickers with personal curations for 10x engagement and revenue - as seen on Samsung Galaxy.
GIPHY Says - Turn your words into animated GIFs!
Sticker.Place API - Get stickers for your app
Drop to GIF - Super simple movie to GIF conversion