Virtual Radar Server is an open-source .NET application that runs a local web server
You can connect to the web server with any modern browser and see the
on a Google Maps map
Virtual Radar Server runs on Windows 10, 8, 7, Vista, XP and Linux (via Mono)
Tracking real aircraft
You will need a radio that is capable of receiving Mode-S transmissions.
Virtual Radar Server was written and tested using Kinetic Avionic's SBS-1er and SBS-3 radios but it will
work with any receiver or SDR that can produce the Kinetic text message format,
Kinetic's SBS-3 binary format, the AVR "*", "@" or ":"
formats or the Mode-S Beast binary format.
Tracking Flight Simulator X aircraft
Virtual Radar Server can also show you the location of a simulated aircraft being
flown in Microsoft Flight Simulator X. You just need to install Virtual
Radar Server on the same computer that Flight Simulator X is running on.