Epic Pen - A windows tool for drawing over your desktop and applications
OBS Studio - Free and open source software for video recording and live streaming for Mac, Windows and Linux.
Gromit-MPX - Create annotations by directly drawing on your screen.
Snagit - Screen Capture Software for Windows and Mac
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
gInk - An on-screen on-screen annotation software for Windows.