World Wind allows any user to zoom from satellite altitude into any place on Earth, leveraging high resolution LandSat imagery and SRTM elevation data to experience Earth in visually rich 3D. Includes a topographic layer.
Google Earth lets you fly anywhere on Earth to view satellite imagery, maps, terrain, 3D buildings, from galaxies in outer space to the canyons of the ocean. You can explore rich geographical content, save your toured places, and share with others.
Digital USGS topoquads for the State of Georgia are currently being added to the library catalog therefore coverage is focused on the Metro Atlanta region. Also, in prodcution is a Georgia Topographic Index Layer for Google Earth.