I am actively involved in a few software projects. TatraApp is a car frontend for Mac OS X that I’ve been playing with quite a bit. My latest revisions include support for standard NMEA gps receivers. I’m currently revamping the data source code to handle multiple sources in an elegant manner. More information might be available on the MP3Car.com forum.
I’m making the GPS library I shamelessly stole from KisMAC available as a standalone class. A tarball of the beta source is available, although as a standalone class and not a framework.
Released Code
TatraApp-0.2tb
TatraApp-0.1tb
GPSDemo-b1