There was a NASA employee (I believe) who had developed freeware aircraft design software for the Macintosh type of operating system. Indeed, much of that kind of interesting and useful software does seem, in fact, to have been developed and made readily available ONLY for that platform. Anyway, he was developing a PC version of this and meant to have that done a few years ago. The software was called "EGADS". Does anyone know anything about this, the status, etc?