Bist stands for "bidimensional structures" and is a chemical drawing tool. It is focused on organic chemistry, but it may be useful for chemists or teachers as well. Bist support many of the formalisms used to describe molecular structures like single bond, double bond, stereospecific bond, charges, resonance arrows, lone pairs, and so on. It can export both PostScript and PNG formats.
FreeMED is a Web-based medical records (EMR) and patient management system with a printing system, patient scheduling, an HL7 interface, a billing system, XML-RPC Web services, and many other features. It has an extensible modular architecture, allowing it to be customized based on individual practices without having to rewrite core components of the system. It is HIPAA compliant.
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.
Gwyddion is a modular SPM (Scanning Probe Microsope) data visualization and analysis tool. It can be used for all most frequently used data processing operations including: leveling, false color plotting, shading, filtering, denoising, data editing, integral transforms, grain analysis, profile extraction, fractal analysis, and many more. The program is primarily focused on SPM data analysis (e.g. data obtained from AFM, STM, NSOM, and similar microscopes). However, it can also be used for analyzing SEM (scaning electron microscopy) data or any other 2D data.
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.