Stellarium is a free, open source planetarium program for Windows, Mac, and Linux that allows users to explore the night sky in realistic 3D. It displays stars, planets, constellations, galaxies, and other astronomical objects in the sky, with a realistic night sky simulation. It can also be used to simulate the sky at any time, from any location on Earth. In addition, users can view the planets and constellations in different cultures, and in different eras of the past, or even in the future. Stellarium also includes an extensive database of stars, galaxies, and other astronomical objects, and can be used to explore the night sky and learn about our universe.
The best alternative for naked eye astronomy
Discontinued The program is no longer updated. The latest version, 5.73, released in July 2006, can still be downloaded from the official website.
Discontinued The project is no longer being developed. The latest version, 2.3.2, released in July 2013, can still be downloaded from SourceForge.
The space engine appears to be a game and not a star database for astronomy.