Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
OBS Studio - Free and open source software for video recording and live streaming for Mac, Windows and Linux.
Shutter - Shutter is a feature-rich screenshot program.
Snagit - Screen Capture Software for Windows and Mac
Snipping Tool - Use Snipping Tool to capture a screen shot, or snip, of any object on your screen, and then annotate, save, or share the image
Loom - Loom is a screen recording extension for Chrome that gives people the ability to create and share media. Create your own videos using your camera, screen view, and audio. Read more about Loom.