Space Engine - Space Engine is a realistic virtual Universe you can explore on your computer.
Heavens Above - Website for tracking Satellites, Space ships and other space objects.
Celestia - Real-time 3D visualization of space
Stellarium - Stellarium is a free open source planetarium for your computer.
See A Satellite Tonight - Free web app to explore satellite locations.
Mitaka - Mitaka is software for visualizing the known Universe with up-to-date observational data and...