KeyCastr - KeyCastr lets you easily display your keystrokes while recording screencasts.
Carnac - A utility to give some insight into how you use your keyboard/
YAKD - Tiny, open-source app for displaying mouse and key presses for screen recordings.
Key-mon - Utility to show live keyboard and mouse status for teaching and screencasts.
Kling - Visually display key presses on Windows screen
KeyCastOW - keystroke visualizer for Windows, lets you easily display your keystrokes while recording...