GIPHY for iMessage - The easiest way to share all the GIFs in all your txts
Bobble Stickers for iMessage - One selfie, Unlimited Stickers!
Doll Up Stickers - Dress up your messages.
Bitmoji - Turns your avatar into stickers and emoji
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.
Ebroji - The first curated GIF keyboard