GNU SpaceChart is a GNOME application that shows the stars in space in 3D. It allows the user to rotate them, select which stars are shown, and draw lines between stars that are closer than a given distance.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.