Cosmonium
Space Engine
OpenSpace
Celestia
Stellarium
Mitaka
WorldWide Telescope
Solar System Scope
Sky Guide
Stellarium
KStars
SkyView
Sky Map
Star Walk
Solar System Scope
Star Chart
CosmoniumSpace 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.
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.
KStars - KStars is a Desktop Planetarium for KDE.
Celestia - Real-time 3D visualization of space
SkyView - SkyView is powerful, easy-to-use app that answers questions about stars, constellations, and more.