Universal Maps Downloader is a small and handy tool specially designed to download satellite maps from 150+ online map services. It can download map tiles based on the user-defined latitude and longitude scope, and save them on the local disk. Although it supports multi-threaded downloading, I recommend that you use it with setting neither too big scope nor too many download threads.

If you need to make a high-resolution satellite map of a city or any specified area, then AllMapSoft's Google Satellite Maps Downloader (GSMD for short) this straightforward and intuitive small app can help you a lot. It automatically and very fast downloads numerous small piece of satellite maps on Google Maps (according to the user specified geographical coordinates: latitude and longitude range + zoom level) with ease, then combines them together and outputs as a huge image file in multiple common-used formats.