Presentify - Screen Annotation and Cursor Highlight for macOS.
KeyCastr - KeyCastr lets you easily display your keystrokes while recording screencasts.
PointerFocus - Allows you to highlight the cursor using either the toolbar or hotkeys.
Screenkey - Screenkey is a screencast tool to display your keys inspired by ...
Carnac - A utility to give some insight into how you use your keyboard/
Kling - Visually display key presses on Windows screen