celestia

Celestia

 1.6.1
Free (Open Source)   
2

You will have all our Solar System into your computer with this simulator

stellarium

Stellarium

 1.22.3 - 64 bits
Free (Open Source)   
7

With this program you can see the cosmos in your computer screen.

openuniverse

OpenUniverse

 1.0 beta 3
Free (Open Source)   
1

With this application you can observe all the wonders of the universe in motion and in 3D from your computer.

nasa worldwind
Free (Open Source)   
2

With this tool you will be able to see the world from the point of view of a NASA satellite