Listed in this category are a selection of flight simulator packages and games that are free-to-download. Most of them are compatible with Windows, Linux and macOS (or OS X). Some are demos of fuller simulation packages, such as the Microsoft Flight Simulator X Demo or X-Plane, while others offer the entire package because they are open source such as FlightGear.
Professional-class simulator: Used by schools for pilot training and aerospace engineers to simulate aircraft configurations and designs, X-Plane for Mac features real-world airports and flight. What’s more, because it is open source, it is completely free, which is awesome. For Mac at least, there is no need to spend hundreds on a flight simulator when there is great free one on offer. Instead, better spend your money on a good joystick (as I did), so you can get the best flying experience possible.
Free-to-Download
Best Flight Simulator For Mac Os X 10.8
All of the files here are free to download – no registration or subscription is required, however, some of the installation files are quite large so you may benefit from registering for a PRO account (which offers uncapped download speed). Plus, you'll have full speed access to download any of the files in the library such as any aircraft, scenery and tools you may wish to install.
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Support for Multiple Operating Systems
Flight Simulator For Macintosh
The packages here offer support for Windows, Linux and Mac. Microsoft Flight Simulator X runs on Windows only while X-Plane and FlightGear run on all operating systems (Windows/Linux/Mac).