ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
OBS Studio - Free and open source software for video recording and live streaming for Mac, Windows and Linux.
LICEcap - A straightforward, high performance application that enables users to capture a portion of the desktop and save it to . GIF or . LCF, LICEcap is available for download as a GPL free software.
Snagit - Screen Capture Software for Windows and Mac
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.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.