ScreenStream lets others 'watch' your screen on their computers over the network or the internet. It is the modern equivalent of the overhead projector. When you turn on screen sharing others on your network (or even the internet) can view what is on your screen by typing the link (and optional access code) into their internet browser. They can continue to watch your screen until you turn off screen sharing. One of the main advantages of ScreenStream is that the viewers do not need to install any special software to view your screen. They just open it directly with their normal internet browser. It is also supports optional streaming audio so others can hear what you are saying