4Gifs.com - Funny Animated GIF archive.
Crumbles - Crumbles are like reaction GIFs with a way bigger vocabulary
Giphy - Search all the gifs and make your own animated gif
Rif - Product Hunt for reaction GIFs
crazygif - Crazy and Funny Gifs from real events from life of people and animations.
Mematic - Mematic – Make Your Own Meme is another free to use meme generator application developed and published by Trilliarden.