Free Starry Night (series) Alternatives

Stellarium is a free open source planetarium for your computer. It shows a realistic sky in 3D, just like what you see with the naked eye, binoculars or a telescope.

Sky Map (formerly the Google Sky Map) turns your Android-powered mobile phone into a window on the night sky.

Gaia Sky is a real-time, 3D, astronomy visualisation software that runs on Windows, Linux and OS X.

KStars is a Desktop Planetarium for KDE. It provides an accurate graphical simulation of the night sky, from any location on Earth, at any date and time.

This program enables you to draw sky charts, making use of the data in 16 catalogs of stars and nebulae. In addition the position of planets, asteroids and comets are shown.

3D simulation of the Solar System and night sky - real time virtual orrery and observatory

Mitaka is software for visualizing the known Universe with up-to-date observational data and theoretical models. Mitaka users can seamlessly navigate through space, from the Earth to the edges of the known Universe.

SkyView is powerful, easy-to-use app that answers questions about stars, constellations, and more. Simply point the camera to the sky, tap on what you see and discover neat things about these sky objects.

SkEye is an advanced Planetarium that can also be used as a PUSHTO guide for telescopes.

Aladin is an interactive sky atlas allowing the user to visualize digitized astronomical images or full surveys, superimpose entries from astronomical catalogues or databases, and interactively access related data and information from the Simbad database, the VizieR service and...