Math
AlgoBox
Algorithm creation and execution helper
ASE GUI
Atomic Simulation Environment GUI
Beads
2-DE gel spot detection
Biogenesis
artificial life program that simulates the processes involved in the evolution of organisms
Cadabra
Computer algebra system for field theory problems
Calc
Arbitrary Precision Calculator
CaRMetal
CaRMetal interactive geometry
ConvertAll
a flexible unit converter
EDFviewer
Simple Viewer of ESRF Data Format files
Elementsinfo
Display X-ray fluorescence related atomic properties
Engauge Digitizer
interactively convert a bitmap graph or map into numbers
fityk
Curve fitting (esp. peak fitting) and data analysis
Fraqtive
Mandelbrot family fractal generator
GeoGebra
Create interactive mathematical constructions and applets.
Geophar
Swiss-army knife for math enthusiasts
Gmsh Mesh Generator
3D finite element mesh generator
Genius Math Tool
Genius Mathematical Tool and Calculator
Gnumeric
Calculation, Analysis, and Visualization of Information
GPeriodic
A program for looking up data of elements from the periodic table
Grace
An XY plotting tool
gretl
Econometrics package
Gvb
Play with waves and vibrations
Gwyddion
SPM data visualization and analysis
wxMaxima
A graphical user interface for Maxima, a powerful computer algebra system