Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Screenzy - A simple screenshot beautifier
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
BrandBird - Brand your Twitter content uniquely
LightShot - The fastest way to take a customizable screenshot.
Xnapper - Take beautiful screenshots instantly