Space Engine - Space Engine is a realistic virtual Universe you can explore on your computer.

Pioneer Scout Plus - A game of missions, trade and space combat in the 31st century using the Pioneer Space Sim engine...

Mitaka - Mitaka is software for visualizing the known Universe with up-to-date observational data and...

Celestia - Real-time 3D visualization of space

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.

Stellarium - Stellarium is a free open source planetarium for your computer.