Imgur's Video to GIF - Make a GIF from hundreds of video sites
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
GifRun - GifRun provides easiest way to find and create animated GIFs from YouTube, Video, Images or Vine...
GIPHY Says - Turn your words into animated GIFs!
CONV. - Convert YouTube video to MP3, GIF or MP4