OBS Studio - Free and open source software for video recording and live streaming for Mac, Windows and Linux.
Google Duo - Google's answer to Facetime, high-quality video calling on iOS and Android.
MWSnap - MWSnap is basically a free to use Windows snapping tools that are used for snapping any part of the screen that is currently displaying on the front of all opened programs and windows.
GoRemote - A free & simple yet powerful European based solution to go remote. Video & audio conferences, screen sharing & chat with end to end encryption. Keep your team close and productive
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Around - Find people to hang out with.