SLD Calculator is a GUI to calculate the characteristics of chemical compounds, especially the Neutron and X-Ray scattering length densities that are often required to know in scattering experiments. Furthermore, it offers internationalization support and is capable of switching the language at runtime.
HeeksCAD is a CAD application. It can import solid models from STEP and IGES files, draw construction geometry and lines and arcs, create new primitive solids, or make solids by extruding a sketch or by making a lofted solid between sketches. Solids can be modified using blending or boolean operations. Models can be saved as IGES, STEP, and STL. The 2D geometry can be plotted with a printer or to HPGL. DXF files can be imported and exported; lines, arcs, spline, ellipses, and polylines are supported. SVG import has similar capabilities. It is possible to make Add-In modules. The HeeksCNC project provides a CAM add-in, and HeeksPython provides a Python console.
The GradeCalculator is a tool to calculate your personal final study grade (for a bachelor's or master's degree). The GradeCalculator helps you easily compute your average grades per semester, to monitor your academic performance, and to check your final grade calculated by the university. It's available in 15 different languages and can be customized for your university by editing XML files.
FreeCAD is a CAx RAD based on OpenCASCADE, Qt4, and Python. It features some key concepts like Macro recording, Workbenches, and the ability to run as a server. It's also platform-independent. It is is fully scriptable and designed to be easily extensible; only the core functionality is embedded into the core libraries, but all further functionality like support of triangle meshes, CAM, FEM, etc. is implemented in extension modules. Normally, such a module is divided into an 'App' part containing the data structures and algorithms and a 'GUI' containing the graphical representation of data structures, dialogs, workbenches, etc.
GraSy is a tool that converts context-free grammars, which are written in the "Backus-Naur Form" (BNF), into syntax diagrams and the other way around. The grammar and the syntax diagrams can be saved with g2s-file. It is also possible to export syntax diagrams as PostScript files. To keep a good overview while creating syntax diagrams it is possible to change the zoom level.
VS-Sim is a simulator for distributed systems. It stands for "Verteilte Systeme Simulator", which is the German translation for "Distributed Sytstems Simulator". The project was a diploma thesis at the Aachen University of Applied Sciences, and can simulate various scenarios of the distributed systems lecture at the university.