X-Plane11 is a flight simulator developed by Lamitar Research. This is in my opinion one of the better flight simulators on the market at this time. Microsoft is trying to reenter the flt sim game but I’m not sure how long will it be before it is a stable platform. You have other flt sims based on the old ms fsx that is over a decade old although they have tried to update them but it is still 2000 architectural. XP11 has been updated regularly and keeps improving the standard for civilian flt sims.