Would love to see something like this but simpler:
A simple open source Android app that I can connect to my WiFi and then connect to from the outside so I can see what is going on in my premises.
So it should just wait for a connect from the outisde and when I connect (via a browser) it turns on the camera and streams the video.
The app code should be as short as possible, so I can read and compile it myself. So I can trust it.