OBS Studio - Free and open source software for video recording and live streaming for Mac, Windows and Linux.
DroidCam - DroidCam – Use your Android phone as a wireless webcam or an IP Cam!
Snagit - Screen Capture Software for Windows and Mac
Iriun Webcam - Use your phone's camera as a wireless webcam in your PC or Mac.
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
iVCam - iVCam transforms your Mobile Phone / Pad into a webcam for Windows PC.