The YSFlight Mission Utility allows users to create custom save files for use with the YSFlight Simulation Program. Features include the ability to create huge squadrons of aircraft, massive dogfights and complete user control.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.