Gifs.com - Easily turn videos into a GIF
Giphy - Search all the gifs and make your own animated gif
Piktogramic - Guess the game's chosen subject on your own or with friends!
GIPHY Says - Turn your words into animated GIFs!
Crumbles - Crumbles are like reaction GIFs with a way bigger vocabulary
Drop to GIF - Super simple movie to GIF conversion