Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Screenkey - Screenkey is a screencast tool to display your keys inspired by ...
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
KeyCastr - KeyCastr lets you easily display your keystrokes while recording screencasts.
LightShot - The fastest way to take a customizable screenshot.
Carnac - A utility to give some insight into how you use your keyboard/