STL Tracker (full name: Sumus Technology Limited Tracker, Tracker for short) is a new generation of real-time satellite tracking software for Windows, developed by Sumus Technology Limited from Canada. It can connect to many satellites, and allows users to quickly and easily track any number of satellites in a variety of graphical and textual views.

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.