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 Chrome Extension - Respond to emails, tweets & more w/ GIFs in a jiffy
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!
Firefox Multi-account Containers - Sign in to two different accounts on the same site