Giphy Chrome Extension - Respond to emails, tweets & more w/ GIFs in a jiffy
GIFMaker for Mac - GIFMaker – Created a GIF from a video or Images is the easiest way to create an animated GIF on your Mac.
PopKey for Desktop - Quickly share ridiculous GIFs from Mac or Windows
Giphy - Search all the gifs and make your own animated gif
All the GIFs - Search all the GIFs right from your Mac
GIPHY Says - Turn your words into animated GIFs!