PostMO is a database system which monitors moving object(for instance, cars) in cities. It can be used to monitor city traffic. It bases on PostGIS which has a lot of functions to operate geo. objects(such as streets).
Use map data to plan hikes or explore new areas. Includes 3D maps of terrain rendered in real-time; trace trails across the terrain and get height verses distance profiles; tile together adjacent maps to create seamless map areas. Reads USGS SDTS files.