As a result, there are thousands of free downloads available to enhance the simulation experience. Many popular flight simulators, including Microsoft Flight Simulator, Prepar3D, and X-Plane, encourage and support community-contributed content. One of the best things about the flight simulation community is that it’s always been heavily and passionately supported by creative people who have made their work and contributions available to the community for free. In the world of flight simulation software add-ons, there are “freeware” (no charge) and “payware” (for a price) modifications you can apply to your simulator.