Celestia is an application for real-time 3D visualization of space, with a detailed model of the solar system, over 100,000 stars, more than 10,000 galaxies, and an extension mechanism for adding more objects.



The best open source alternative to Stellarium is Celestia. If that doesn't suit you, our users have ranked more than 50 alternatives to Stellarium and 13 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Stellarium are Sky Map, KStars, Gaia Sky and WorldWide Telescope.
Celestia is an application for real-time 3D visualization of space, with a detailed model of the solar system, over 100,000 stars, more than 10,000 galaxies, and an extension mechanism for adding more objects.



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




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.




The WorldWide Telescope (WWT) is a Web 2.0 visualization software environment that enables your computer to function as a virtual telescope, bringing together imagery from the best ground and space-based telescopes in the world for a seamless exploration of the universe.

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.




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


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...




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...
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...
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.


Best Alternative for naked-eye astronomy