As far as I know, there are FLOSS GPS software alternatives, but no open
source GPS hardware alternatives.
It might even be impossible, because maybe ALL satellites require some kind
of "signature" from the hardware. A home made GPS might never work. But I
don't know, if there is let me know :)
- [Trisquel-users] libre gps hardware cmhobbs
- Re: [Trisquel-users] libre gps hardware gnuser