GIPHY for iMessage - The easiest way to share all the GIFs in all your txts
Twidd - Enhanced Twitter DMs - Create and use DM templates, all within a browser extension.
Bobble Stickers for iMessage - One selfie, Unlimited Stickers!
Smart Stickers - 90 catchy illustrations for attractive designs
Momento - Momento is a unique diary/journal writing app for iPhone & iPod touch, which provides a quick...
#Stickers on Twitter - Now you can add stickers to your photos on Twitter