Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Screenmeet - Screen Share your phone or desktop to any device instantly
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Fire Files - Fire Files is the industry's leading investigation software for the case management of police, fire, arson, and bomb investigations.
LightShot - The fastest way to take a customizable screenshot.
Envelop - Immersive virtual reality platform for the Windows desktop, use all your Windows apps in VR.