1. Orbiter is a realistic 3D real-time space flight simulator program. Official site with free download. DownloadDownload mirror 1 Europe - Textures - Gallery - Links - .

  2. Universe Sandbox ² is a physics-based space simulator.

  3. The FlightGear flight simulator project is an open-source, multi-platform, cooperative flight...

  4. The world's most advanced flight simulator just got an upgrade. Download the free demo today for Windows, macOS, & Linux.

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

  6. The next-generation Flight simulator

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

  8. 3D visualization software for ESA's (European Space Agency) Gaia mission to chart about 1...

  9. Build spacecraft, fly them, and try to help the Kerbals to fulfill their ultimate mission of conquering space.

  10. 3D model of the Solar System and night sky in real time

  11. KStars is a Desktop Planetarium for KDE.

  12. Player-created empires, player-driven markets, and endless ways to embark on your personal sci-fi adventure.