Desktop Earth - You should run it as admin.
EarthView - Free Cloud Data Download
Xplanet - Xplanet is free software, distributed according to the terms of the GNU General Public License.
TerraTime - TerraTime provides an amazing, interactive, real-time virtual Earth.
HD Space Live Wallpaper - HD Space Live Wallpaper helps you get a glimpse of the earth’s magnificence.
Rotating Earth Wallpaper HD - Rotating Earth Wallpaper HD gives you a full-fledged view of the earth in 3D.