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.


Star Tracker is described as 'Just hold up and point the device to the sky and have fun! You can see any stars, constellations and deep sky objects you are watching in real time' and is a Star Map in the education & reference category. There are more than 25 alternatives to Star Tracker for a variety of platforms, including iPad, iPhone, Android, Android Tablet and Windows apps. The best Star Tracker alternative is Stellarium, which is both free and Open Source. Other great apps like Star Tracker are Trail Sense, Sky Map, KStars and Gaia Sky.
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.




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.




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








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




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...




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.




The Starry Night apps are the most comprehensive educational astronomy apps. Use it with your introductory astronomy textbook or on its own. It's a powerful, portable planetarium that fits in your backpack. It puts thousands of stars and planets at your fingertips.




Can’t see the moon? Want to know where it is? Look through the eyes of your device to see a virtual window into the whole visible universe.



