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.
It is being used in planetarium projectors. Just set your coordinates and go.

Stellarium is a software project that allows people to use their home computer as a virtual planetarium. It calculates the positions of the Sun and Moon, planets and stars, and draws how the sky would look to an observer depending on their location and the time. It can also draw the constellations and simulate astronomical phenomena such as meteor showers, and solar or lunar eclipses.

Stellarium may be used as an educational tool for teaching about the night sky, as an observational aid for amateur astronomers wishing to plan a night's observing, or simply as a curiosity (it's fun!). Because of the high quality of the graphics that Stellarium produces, it is used in some real planetarium projector products. Some amateur astronomy groups use it to create sky maps for describing regions of the sky in articles for newsletters and magazines.

Stellarium is under fairly rapid development, and by the time you read this guide, a newer version may have been released with even more features that those documented here. Check for updates to Stellarium at the Stellarium website.

The license of this software is Free, you can free download and free use this browser tool software.