GIFit! - Quickly turn YouTube videos into GIFs (chrome extension)
Giffing Tool - Giffing Tool is simply put: The fastest creator of high quality captioned GIFs available.
Turn Off the Lights - With a single click on the lamp button, the page will fade to dark.
Gifox - Delightful GIF Recording and Sharing App for macOS
Youtube Plus - Home of the extension YouTube Plus that allows you to experience more on YouTube - ParticleCore/Particle
Honeycam - Make wonderful Animated GIFs by using Honeycam, very easy GIF image-making and editing software!