No. Garmin uses proprietary vector maps, while Maemo Mapper uses raster maps. You can get them for free, just download them from one of the listed sites, such as Google Maps. For viewing, the raster maps are much better, and you can get aerial/satellite photos or street maps, much better quality for viewing than the Garmin maps. OTOH, raster maps can't be used for auto-routing, only viewing your position from the GPS.