Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Giphy - Search all the gifs and make your own animated gif
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
GIPHY Says - Turn your words into animated GIFs!
LightShot - The fastest way to take a customizable screenshot.
Drop to GIF - Super simple movie to GIF conversion