There's source code on GitHub for a simple version of this tech (without multiplayer or smooth and fast streaming): https://GitHub.com/crisdosyago/BrowserBox

And a closed source version that has multiplayer, audio and much faster streaming (than the GitHub version) that uses webrtc.

I also have a few projects to bring even higher quality streaming, including an xvfb headful version using an extension to enable getDisplayMedia APIs to share the screen.

It's a different approach to Hyperbeam. I love that there are more and more new and young products in this space!