From OpenStreetMap Wiki
|Platforms:||Windows, Linux, and Openmoko Linux|
|Languages:||German, English, and Hungarian|
|License:||GNU General Public License|
LuckyGPS (luckygps.com) is an offline routing, navigation, mapping and tracking application all in one.
Open Source development is at http://luckygps.googlecode.com (SVN and bug tracking)
Development seems to have been stopped in February 2011.