OpenSpace - OpenSpace is open source interactive data visualization software designed to visualize the entire known universe and portray our ongoing efforts to investigate the cosmos.
Celestia - Real-time 3D visualization of space
Ad Astra - Ad Astra is an open-ended space exploration game which has attempted to model a Galaxy of over...
WorldWide Telescope - The WorldWide Telescope (WWT) is a Web 2.
Stellarium - Stellarium is a free open source planetarium for your computer.
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.