GIFjam for Messenger - Animated GIF memes for Facebook Messenger
Synthesia - A fun way to learn how to play the piano.
Crumbles - Crumbles are like reaction GIFs with a way bigger vocabulary
Piano From Above - Piano From Above is a program that turns learning the piano into a videogame.
GIF Search on Twitter - Get ready to search and send GIFs in tweets and DM's
Playground Sessions - Online piano learning game.