GifJif - Turn GIFs into masterpieces.
Giphy Chrome Extension - Respond to emails, tweets & more w/ GIFs in a jiffy
Giphy - Search all the gifs and make your own animated gif
PopKey for Desktop - Quickly share ridiculous GIFs from Mac or Windows
GifLab - The easiest way to create GIFs on your iOS device
Vlipsy - Easily add your favorite video clips to any conversation.