Programmer/Videnskab

Science

Plotting Data and Graphs

QtiPlot
	QtiPlot analyzes and visualizes scientific data.
Rocs
	An interactive Graph Theory IDE for Students.

Data Manipulation

RKWard
	A front-end for the R programming language designed for data manipulation

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