OBS Studio - Free and open source software for video recording and live streaming for Mac, Windows and Linux.
Nvidia ShadowPlay - ShadowPlay
Camtasia - Camtasia 2018 makes it easy to record your screen and create polished, professional-looking videos.
ConnectWise Control - ConnectWise Control is a mobile app that allows you to instantly connect with another system from anywhere with a connection to the internet. The software not only comes in a mobile app, but it has a desktop version as well for complete coverage.
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.
Droplr - Droplr is a tiny application that aims at helping people share things easier.