Push your Mac screen to
Mirror Display capture the screen and create a HTTP video server to allow other computers/devices to connect and view your screen in real time, via WiFi or Ethernet.
Run this App on your Mac, you'll get a HTTP address, now open that address with web browser on remote computers. The remote computer can be Mac, Windows or Linux or even iPad/iPhone, and you can make Dozens of computers connect simultaneously!
Yes, you are broadcasting your screen in real time, no matter you are playing games, watching videos, or teaching courses etc.
To Windows user: IE didn't support MJPEG video by default, you need to install MJPEG plug-in for IE. Or you can use Edge, Chrome, Safari instead.