OpenAvionics is a hardware/software projet to design low cost instrumentation (air/attitude, navigation, voice, engine) for light and ultra light aircrafts. The display part of the project may be used in aircraft simulation projects.
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.