GIFMaker for Mac - GIFMaker – Created a GIF from a video or Images is the easiest way to create an animated GIF on your Mac.
Wibbitz - Watch video summaries of the news you want.
Giphy - Search all the gifs and make your own animated gif
GIFit! - Quickly turn YouTube videos into GIFs (chrome extension)
GIPHY Says - Turn your words into animated GIFs!
Youtube Plus - Home of the extension YouTube Plus that allows you to experience more on YouTube - ParticleCore/Particle