And what about Hike ? http://maemo.org/downloads/product/OS2008/hike/ This is a simple application it accepts self-scanned .jpg / .png maps up till 12 MB size. I made a small PHP script to convert Oziexplorer .map files to calibration files. Unfortunately no further versions are updated since Sep 2008. But the application works, ideal for hiking, bike tours or inflight flight tracking.