Desktop Earth - You should run it as admin.
EarthView - Free Cloud Data Download
TerraTime - TerraTime provides an amazing, interactive, real-time virtual Earth.
Xplanet - Xplanet is free software, distributed according to the terms of the GNU General Public License.
MeteoEarth - WeatherPro is your weather rain radar and extreme weather tracker on your iOS and Android device.
Earth 3D - This interactive 3D globe features wonders of the world, political and geographic maps, and weather.