FlightGear Flight Simulator: free open-source multiplatform flight sim
GPS log file viewer and analyzer
Scanning probe microscopy data visualisation and analysis
A planetarium software that shows a 3D simulation of the night sky
An object relational-mapping (ORM) library for Java
A collection of packages providing extra functionality for GNU Octave
A circuit simulator with graphical user interface (GUI)
a parametric 3D CAD modeler
Tool support for the Z formal notation
Model Railway CAD program
32/64 bit multi-platform Ethernet S7 PLC communication suite
Library to control radio transceivers and receivers
DXF2GCODE: converting 2D dxf drawings to CNC machine compatible G-Code
PICSimLab is a realtime emulator for PIC, Arduino, STM32, ESP32, ...
Software tools for processing taxonomic descriptions in DELTA format
For exploring cellular automata like Conway's Game of Life.
Open source finite element software for multiphysical problems
Open Source CFD Toolbox