Drop to GIF - Super simple movie to GIF conversion
Gifs - Search through a library of hundreds of GIFs that you can send in your messages or that you can share to social media pages.
GIFMaker for Mac - GIFMaker – Created a GIF from a video or Images is the easiest way to create an animated GIF on your Mac.
Vibby - Create + share highlights from any video in seconds
Giphy - Search all the gifs and make your own animated gif
Slacker - Post funny replies to Slack as Mr. T, Yoda, Picard, & more