Flight explorer
 

I am currently using flightexplorer.com to track United Airlines flight 926 from SFO-FRA. I downloaded the Terra Software ( you select 3D map and it will download and open the exact place on the map of where the flight is). This is the first free website that will track all flights since most website only track US flights and it's free. The view looks like Airshow 3D so now our Flight Talk geeks can have Airshow on the computer. You can view roads, cities go forward to the aiport rewind and other cool things like you can do on Airshow 340(:.