ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Placeit - Generate realistic product shots in seconds
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Screenshot.rocks - Create beautiful browser mockups from your screenshots
LightShot - The fastest way to take a customizable screenshot.
Pika App - A free tool to quickly generate beautiful browser screenshots. You can capture screenshot from website, add browser frames, 3d tilt-effect, background colors to screenshots and more