PACKAGES required: 1. OSSIM, found at ossim.org. This is the core geospatial image and corrdinate processing ngine used by ossimPlanet 2. libwms. Used for WMS access. This uses libcurl for the http protocol. 3. OpenSceneGraph. Found at openscneegraph.org. This is used for the 3-D visualization. 4. An optional package that can be used is osgEpehermis. The current package is maintained by Don Burns and can be found at: http://www.openscenegraph.org/html/OsgEphemeris/ If you do not want osgEpehermis support then you can turn it off by editing the include/ossimPlanet/ossimPlanetSetup.h file.