A powerful arbitrary-precision calculator.
Object-oriented equation-based modelling and optimisation software
Zoomable user interface (ZUI) with file manager, file viewers and more
Electronic Laboratory Notebook, chemical inventory & more
Scientific Visualisation Made Easy
GPS track editor for editing tracks and planning (multiple) day tours
... the open-source glide computer
ECG Toolkit support for: SCP-ECG, DICOM, HL7 aECG, ISHNE & MUSE-XML
Unified Data Envelopment Analysis commands for Stata
Marine Engine Room Simulator for STCW
An open process control and laser engraving software solution
An information system for cyclists in Berlin and Brandenburg
computing f2 bootstrap CI BCA
Command-line operators for netCDF and HDF files
Quaternion and octonion toolbox for Matlab
Scientific/engineering firmware repurposing HP business calculators!
CAD Application entire developed in Python
A network server for the flightgear simulator
JaxoDraw: Feynman Diagrams made easy!
Calc: arbitrary precision C-like arithmetic & calculator