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.


The best open source alternative to Sky Map is Stellarium. If that doesn't suit you, our users have ranked more than 25 alternatives to Sky Map and ten of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Sky Map are Trail Sense, KStars, Gaia Sky and Planetario.
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.


An Android app which uses your phone's sensors to assist with wilderness treks or survival situations. Works as general offline multitool.




Open-source astronomy software offering accurate night sky simulation with 100 million stars, Ekos astrophotography suite, stellar observation planner, "What's up Tonight" tool, FOV editor, and a variety of celestial catalogs for comprehensive astronomical exploration.




3D visualization software for ESA's (European Space Agency) Gaia mission to chart about 1 billion stars of the Milky Way Galaxy.




Planetario contains a 3D model of our solar system. It will show the horizon and the planets in their path along the sky. The word planet comes from the Greek planetai, meaning "wanderers". Because of the rotation of the earth, the stars seem to move in perfect...




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.




Aciqra (uh-SEE-kruh) is a free and open source virtual sky map and planetarium which tracks and displays astronomical bodies including planets, nebulae and stars to an accuracy of a fraction of a degree for thousands of years into both the future and the past.


Welcome to the Atlas of Space — an interactive visualization to explore the planets, moons, asteroids, and other objects in the Solar System.


Astrarium is a free and open source desktop planetarium software for Windows. It allows to discover night sky as seen from any point on the Earth and any date and time instant. There are many celestial objects can be observed, from eight major planets to faintest stars...
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...
Genuinely open source & ad free. Exposes all features in an easy to explore way with clear labels & detailed explanations. Bundles several useful tools in addition to sky map.