GIFjam for Messenger - Animated GIF memes for Facebook Messenger
Imoji - Turn selfies or any photo into stickers you can text
Crumbles - Crumbles are like reaction GIFs with a way bigger vocabulary
ScribbleBoard - iOS8 Keyboard for hand drawing your messages
GIF Search on Twitter - Get ready to search and send GIFs in tweets and DM's
DrawType - The Drawing Keyboard