Some software have an option for their window to be "Always on Top". Is there any way to get the same functionality for any window.
Let me give an example where this would be useful.

Suppose I have a small browser window with real time stats from a game. The window is automatically updated at the rate of once every 10 seconds. I would like the small window to be always on top. so that I can just look at it whenever I want to, without actually going to it and at the same time I could continue working in my main application, which is at full screen.

Is there any Windows hack or App which can give me this functionality?