Astronomer - Capture every user event and route them anywhere. Automatically
Space Engine - Space Engine is a realistic virtual Universe you can explore on your computer.
Stellarium - Stellarium is a free open source planetarium for your computer.
Stardust - Friends and fans sharing video reactions to Movies & TV.
Universe Sandbox - Universe Sandbox ² is a physics-based space simulator where you can simulate Events and even break physics and friction with certain features.
Cosmonium - Cosmonium is a 3D astronomy and space exploration program.