Maemo Periodic is a periodic table that shows a great quantity of information about chemical elements.

A simple function calculator and plotter.

This is a port of Free42, an HP 42S emulator.

Lybniz is an easy to use mathematical function graph plotter using pyGTK.

EasyChem is a program that helps you creating high quality diagrams of molecules and 2D chemical formulas that can be exported to PS, and fig.

Octave is a (mostly Matlab (R) compatible) high-level language, primarily intended for numerical computations.

Package for making 2D and 3D graphs from data and functions.