Chumpu iMessage Sticker Pack - Animated Chumpu cartoon stickers for iMessage
jQuery TokenInput - Tokeninput is a jQuery plugin which allows your users to select multiple items from a predefined...
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.
Procatinator - Random full screen cat gifs to music. Need I say more?
Sticker.Place API - Get stickers for your app
Reverse Movie FX - Reverse Movie FX is free to use application that lets you create a reverse video that looks like a magic trick.