KTurtle is an educational programming environment for learning how to program. It provides all programming tools from its user interface.
KBruch
KBruch is a small program to practice calculating with fractions and percentages. Different exercises are provided for this purpose and you can use the learning mode to practice with fractions. The program checks the user’s input and gives feedback.
kalcium
Kalzium er et program, der viser dig grundstoffernes periodiske system.
Stellarium
Stellarium er et gratis open source planetarium til din computer.
KStars
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 – real-time 3D visualization of space