Screenkey - Screenkey is a screencast tool to display your keys inspired by ...
KeyCastr - KeyCastr lets you easily display your keystrokes while recording screencasts.
QiPress - QiPress is a portable Windows program that displays key presses on the screen.
Carnac - A utility to give some insight into how you use your keyboard/
KeyCastOW - keystroke visualizer for Windows, lets you easily display your keystrokes while recording...
YAKD - Tiny, open-source app for displaying mouse and key presses for screen recordings.