Offline Map Maker is a tool that helps you to get offline tile images from Google Maps, Yahoo maps, Bing Maps, and Openstreetmap. All downloaded offline images are saved on your disk.
You can view the downloaded offline map by Offline Map Viewer. And you can zoom out or zoom in on the offline map or output the offline map as a . BMP file with a world file xxx. bpw, and can output an xxx—map file for OziExplorer.
If you want to make an offline map of your city by yourself, it is beneficial.