Looking for software

Hope this is the place to post this request ...A few months ago I downloaded software form the Web that offered various, what I would call, ATC real time maps that showed you on screen where planes were, and you could hear radio comms as well. But the demo was "fake". Not a flight simulator, but real time maps. This was a demo and they wanted $75 for one package, $75 for another. I hesitated and last night decided to find it. Cannot find it anywhere. My hard drive had subsequently been rebuilt. Does anyone know the software I refer to? Thanks, Robert