Its purpose is to provide GIS users with a quick and easy source of information on a variety of issues. It has 22 GIS related categories and over 800 links. There are many fora on the web which demonstrate the capabilities of GIS by offering free demos and software. It is a complete data explorer, allowing users to display and query a wide variety of standard data sources. Not designed for the analysis of data.
Some sites offer different sorts of data, including satellite imagery.
The system allows users to search satellite data inventories, preview sub-sampled Earth images of that data and download the actual data for further processing and analysis. By connecting to the ImageNet server nearest to their location, users can search a multitude of unique geospatial data archives, preview data matching their search criteria, compare visual information from different sources, and quickly choose data that meet their needs. This program is designed to encourage the development of innovative applications of earth and space science remote sensing data.