Nimbus Screenshot - Take screenshots and record video from your screen
Giphy - Search all the gifs and make your own animated gif
Evernote Web Clipper - Clip, don't bookmark. Web Clipper is a browser extension that lets you save any web page, article, or image into Evernote. Download now.
GIPHY Says - Turn your words into animated GIFs!
ksnip - Ksnip is a Qt based cross-platform screenshot tool that provides many annotation features for your screenshots. - DamirPorobic/ksnip
Drop to GIF - Super simple movie to GIF conversion