FlightGear [SEP] license
License and is free and open-source software.
Some commercial products—"Earth Flight Sim", "Flight Pro Sim", "Flight Simulator Plus", "Pro Flight Simulator", "Real Flight Simulator", "Virtual Pilot 3D", and others—are copies of old versions of "FlightGear", see Commercial redistribution. They are not endorsed by the "FlightGear" project.
History.
"FlightGear" started as an online proposal in 1996 by David Murr, in Canada. He proposed a
FlightGear
FlightGear Flight Simulator (often shortened to FlightGear or FGFS) is a free, open source multi-platform flight simulator developed by the "FlightGear" project since 1997.
David Murr started the project on April 8, 1996. The project had its first release in 1997 and continued in development. It has specific builds for a variety of operating systems including Microsoft Windows, Mac OS X, Linux, IRIX, and Solaris.
"FlightGear" source code is released under the terms of the GNU General Public