pTolemy3D!

World Wind lets you zoom from satellite altitude into any place on Earth. Leveraging Landsat satellite imagery and Shuttle Radar Topography Mission data, World Wind lets you experience Earth terrain in visually rich 3D, just as if you were really there.

Site that lets you compare the satellite imagery offered by NASA, Yahoo Maps, Microsoft Virtual Earth and more.

EarthBrowser is an innovative earth simulation that combines an easy to navigate 3 dimensional globe with real-time weather conditions and 7 day forecasts for thousands of locations worldwide. Live earthquakes, hurricanes, webcams, volcanoes and cloud animations are just some of data that is available in an instant. A great aid to teachers for visualizing earth and space with their students. A must have for anyone who loves to watch the weather.

Earth View is a collection of the most beautiful and striking landscapes found in Google Earth.