KStars is a planetarium program using the KDE Platform. It can be used on most Unix-like computer operating systems, as well as on the Microsoft Windows platform using 'KDE for Windows'. It provides an accurate graphical representation of the night sky, from any location on Earth, at any date and time. The display includes up to 100 million stars (with additional addons), 13,000 deep sky objects, constellations from different cultures, all 8 planets, the Sun and Moon, and thousands of comets and asteroids. It has features to appeal to users of all levels, from informative hypertext articles about astronomy, to robust control of telescopes and CCD cameras, and logging of observations of specific objects.