Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
LightShot - The fastest way to take a customizable screenshot.
FastStone Capture - A powerful, lightweight, yet full-featured screen capture tool that allows you to easily capture...
Snagit - Screen Capture Software for Windows and Mac
Shutter - Shutter is a feature-rich screenshot program.