Offline Map Maker is a tool that help 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 downloaded offline map by Offline Map Viewer. And you can zoom out or zoom in the offline map, or output the offline map as a .BMP file with a world file xxx.bpw, and can output a xxx.map file for OziExplorer. If you want to make a offline map of your city by yourself, it is very useful for you.
Credit goes to Mr. Amanat