Reor is a winsome calculator with loads of functions, by Ajay Menon.
A canvas library for generating technical drawings
The software for systems biology/pharmacology modeling
Kaplan-Meier for Windows
A powerful console calculator with a fast and simple interface.
Simulation, analysis, and management of the movement of water
ALST is a CAD for all imaginable logic systems (binary, ternary, etc)
Programmable Calculator (IP functions, create user functions)
A simple (but growing) calculator for many electronic laws
Ein Programm für die analytische Geometrie
Gene and Genotype frequency Calculator