Wren - Offset your carbon footprint by saving rainforests
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Capture - A great free screen capture utility that allows you to capture either a window or the desktop and save it to either a file or the clipboard.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Treepoints - Fight climate change and earn rewards
LightShot - The fastest way to take a customizable screenshot.