SimpleGPS Mac GPS Software
SimpleGPS is exactly what its title describes, a simple GPS application which works on the Macintosh platform. It displays your coordinates, speed, altitude, as well as the current time. It will also display a graphical view of satellites and you can customize many of the views.
There isn’t anything revolutionary about this product, however it is free. If you have a Mac and need to test what your GPS receiver is receiving, this is a good, quick, free tool to use.