EVE Online - Player-created empires, player-driven markets, and endless ways to embark on your personal sci-fi adventure.
Space Engine - Space Engine is a realistic virtual Universe you can explore on your computer.
Elite Dangerous - Elite Dangerous is a 2015 Trading, Action, Sci-fi, Exploration, Open World and Space Simulation by Frontier Developments.
Celestia - Real-time 3D visualization of space
Star Citizen - 1, 966, 341. Active citizen. Help us make Star Citizen a reality! Become a backer of the next-generation of Space-man. Reserve your ship.
Stellarium - Stellarium is a free open source planetarium for your computer.