ScreenTray - A better way to capture, annotate and share screenshots
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Droplr - Droplr is a tiny application that aims at helping people share things easier.
ScreenToGif - This tool allows you to record a selected area of your screen and save as a animated gif.
recordit.co - Make a short video capture of your desktop as a gif.
LightShot - The fastest way to take a customizable screenshot.