Presentify - Screen Annotation and Cursor Highlight for macOS.
Epic Pen - A windows tool for drawing over your desktop and applications
PointerFocus - Allows you to highlight the cursor using either the toolbar or hotkeys.
Gromit-MPX - Create annotations by directly drawing on your screen.
Pen Attention - A free program that places a highlighted circle or square around the cursor for use in a classroom...
ppInk - a fork from gInk, with extra features (shape drawings, text,...)