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.
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Free Gaia Sky AlternativesStar Maps and other similar apps like Gaia Sky
The best free alternative to Gaia Sky is Stellarium, which is also Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Gaia Sky and many of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to Gaia Sky are Celestia, Sky Map, KStars and I, Voyager Planetarium.
Alternatives list
59 Stellarium alternatives
31 Celestia alternativesCelestia 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.
47 Sky Map alternativesSky Map (formerly the Google Sky Map) turns your Android-powered mobile phone into a window on the night sky.
+5
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.
+9
I, Voyager's free, open-source software planetarium built on the free, open-source Godot Engine.
Cost / License
- Free
- Open Source (Apache-2.0)
Platforms
- Windows
- Online
- Self-Hosted
+7
OpenSpace is open-source interactive data visualization software designed to visualize the entire known universe and portray our ongoing efforts to investigate the cosmos.
Cost / License
- Free
- Open Source
Platforms
- Mac
- Windows
- Linux
+9
50 Solar System Scope alternatives3D simulation of the Solar System and night sky - real time virtual orrery and observatory
Cost / License
- Freemium
- Proprietary
Application type
Platforms
- Mac
- Windows
- Online
- Android
- iPhone
- Android Tablet
- iPad
+4
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...
Cost / License
- Free
- Open Source
Platforms
- Android
- Android Tablet
- F-Droid
+2
StarCalc is the fastest professional astronomy planetarium & star mapping program for Windows 9x/ME/NT/2000/XP (StarCalc version for PocketPC is available). It illustrates star positions of any instance of the day observed from any geographic locations on the Earth.
Cost / License
- Free
- Proprietary
Application type
Alerts
- Discontinued
Platforms
- Windows
- Windows Mobile
Welcome to the Atlas of Space — an interactive visualization to explore the planets, moons, asteroids, and other objects in the Solar System.
It offers a variety of ways to view and analyse tables, including a browser for the cell data themselves, viewers for information about table and column metadata, and facilities for sophisticated interactive 1-, 2-, 3- and higher-dimensional visualisation, calculating statistics...
Cost / License
- Free
- Proprietary
Platforms
- Mac
- Windows
- Java
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Stellarium is a night sky simulator, not a space visualizer like Gaia Sky.