Imgur's Video to GIF - Make a GIF from hundreds of video sites
Tenor - More than 300M people use Tenor every month to communicate with an animated GIF that expresses...
GIFMaker for Mac - GIFMaker – Created a GIF from a video or Images is the easiest way to create an animated GIF on your Mac.
Giphy - Search all the gifs and make your own animated gif
CONV. - Convert YouTube video to MP3, GIF or MP4
Gifyu - Upload GIF Images and Share Pictures Online