Google Earth presents an earth model with the help of satellite imagery and world maps. You can view the map of the entire world as well as zoom in on particular areas. It possesses a simple and attractive GUI. Therefore, anyone can use it regardless of their expertise level. It’s a free application available for XP and later versions of Windows operating system. It’s a small-sized tool, which is why you need not worry about limited memory space on your PC. This app requires very few resources to operate and doesn’t negatively affect the performance of your computer.