The developers of bajasim products as well as the creators of ATC simulator “ATC4Real”, have released AI Live Traffic for FSX and all versions of Prepar3D. AI Live Traffic generates AI flight plans for your flight simulator airports based from real life timetables in real time. The only requirement for this plugin is that an AI aircraft library is installed for your flight simulator.
The developer states that the project is aimed to “fill the void of outdated, incomplete and unreal flight data provided in all the flight plan packages available in the flight simulator community, free and paid.” The only concern for users is gathering AI aircraft models and repaints.
They’ve provided a free, fully functional trial app that is available for download as well, which you can get here.