AbelCam can show your screen in a single picture or as a stream.
Screen Capture must be enabled in the Web Server Basic Configuration
single screen shot <img src="http://localhost:8080/screen.jpg"> <img src="http://localhost:8080/current99.jpg">
screen shots as jpeg stream <img src="http://localhost:8080/screen.mjpg"> <img src="http://localhost:8080/current99.mjpg">