Gaia Sky is a real-time, 3D, astronomy visualisation software
Kirilas
A free astronomical image processing software
Marmuras
Marble is a virtual globe and world atlas — your swiss army knife for maps that you can use to learn more about the Earth and other planets.
Stellariumas
Stellarium is a free open source planetarium for your computer.
Krshtrs
KStars is a Desktop Planetarium by KDE. It provides an accurate graphical simulation of the night sky, from any location on Earth, at any date and time.
celestia
Celestia – 3D erdvės vizualizacija realiuoju laiku