PUBLIC MARKS from Spone with tags map & maps

Natural Earth is a public domain map dataset available at 1:10m, 1:50m, and 1:110 million scales. Featuring tightly integrated vector and raster data, with Natural Earth you can make a variety of visually pleasing, well-crafted maps with cartography or GIS software.

This is a survey of Linux applications (almost all of them are Free Software) for navigation with laptops, notebooks, handhelds, PDAs and mobile phones. They are useful for bikers, car drivers, ship and air plane navigators and others. Additionally there are map conversion tools and links to freely available maps for GPS devices.