OBS Studio - Free and open source software for video recording and live streaming for Mac, Windows and Linux.
Dxtory - Tool to display FPS in video games, make screenshots, record videos.
XSplit - Live stream and record your content with ease & share it to streaming services like Twitch, YouTube, Facebook, Mixer, etc. Start your broadcast today.
Nvidia ShadowPlay - ShadowPlay
Screencast-O-Matic - Free version Records up to 15 minutes, premium is $15/year.
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.