ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Mockuuups Studio - Fast and easy way to create product mockups on macOS, Windows and Linux.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Smartmockups - Create stunning product mockups, easily and online.
LightShot - The fastest way to take a customizable screenshot.
Placeit - Generate realistic product shots in seconds