RightGIF - Less noise, better GIFs. A better /giphy for Slack.
Giffing Tool - Giffing Tool is simply put: The fastest creator of high quality captioned GIFs available.
GoGifApp - Free Slack GIFs App, multiple images to pick from at once
GIPHY Create - Create animated GIFs from videos (by Giphy)
Camo - Use your iPhone or iPad as a pro webcam
Gifox - Delightful GIF Recording and Sharing App for macOS