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.
Carnac - A utility to give some insight into how you use your keyboard/
Pen Attention - A free program that places a highlighted circle or square around the cursor for use in a classroom...
Key-mon - Utility to show live keyboard and mouse status for teaching and screencasts.