There is no free GPS navigation like you want anywhere. The mapping data is proprietary, and costs money. Maemo Mapper is a nice program, but it uses free maps and routing from the internet. That's why it's free. I have mapping software on my Palm, and I also have a standalone mapping GPS, but neither was free. Maemo is rather limited, and there aren't even any paid apps that do what you can get on other platforms. Free is nice, but don't expect great things from it.