Bill Daniels wrote:
Is anyone working on Linux flight software?



This is a good one -

http://freshmeat.net/projects/gpligc

Very powerful, but you have to really be into Linux to get
it up and running with the support libraries it needs -
OpenGL, Perl/Tk, GnuPlot - but would be a good winter time
project to learn about if you want to get into the nuts and
bolts of GPS 3D flight plotting.