All these scenery releases are freeware. Note that these sceneries have been designed to work best with the FTX AU ground textures. For FSX and P3D sceneryt please see
FSX and P3D Scenery
Ant's Aussie Airports is coming to Microsoft Flight Simulator 2020 (not compatible with FSX or P3D). Version 1.00 contains only 2 airfields at the moment but future versions will include additional airports.