Stellarium is a free (gpl) software also available for Windows. It makes part of the category 'Education & Reference' and the subcategory 'Science', and has been published by Stellarium.org.
More about Stellarium
The current version of the program is 0.11.2 and was updated on 06/18/2012. It's available for users with the operating system Mac OS X and posterior versions, and it is available in different languages such as English, Spanish, and German.
Since we added this software to our catalog in 2012, it has managed to achieve 14,043 downloads, and last week it gained 1 download.
Stellarium is a light software that needs less space than most programs in the Education & Reference section.