Applications/Science
Science
Plotting Data and Graphs
QtiPlot
QtiPlot analyzes and visualizes scientific data. Rocs
An interactive Graph Theory IDE for Students.
Simulations
KStars
A desktop planetarium from KDE, accurately representing the night sky from any location on the planet.
Step
An interactive physical simulator which shows how a scene will evolve according to the laws of physics.
Information Systems
Kalzium
An application for viewing information about the elements in the periodic system.
Marble
A powerful virtual globe and world map. It is able to use OpenStreetMaps. You can see it in action in this video