GIPHY for iMessage - The easiest way to share all the GIFs in all your txts
Giphy Chrome Extension - Respond to emails, tweets & more w/ GIFs in a jiffy
Doll Up Stickers - Dress up your messages.
All the GIFs - Search all the GIFs right from your Mac
Bobble Stickers for iMessage - One selfie, Unlimited Stickers!
Firefox Multi-account Containers - Sign in to two different accounts on the same site