Chumpu iMessage Sticker Pack - Animated Chumpu cartoon stickers for iMessage
ezgif.com - Ezgif.com is simple online gif maker and toolset for basic animated gif editing.
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.
Instagiffer - Create GIFs from anything!
Sticker.Place API - Get stickers for your app
Gifsicle - Gifsicle is a powerful, simple command line tool for creating, editing, and optimizing animated GIFs.