Open Source Scientific/Engineering Software

Stellarium renders 3D photo-realistic skies in real time with OpenGL. It displays stars, constellations, planets, nebulae and others things like ground, landscape, atmosphere, etc.

Over 1,000,000 page views per month. Jmol/JSmol is a molecular viewer for 3D chemical structures that runs in four independent modes: an HTML5-only web application utilizing jQuery, a Java applet, a stand-alone Java program (Jmol.jar), and a "headless" server-side component (JmolData.jar). Jmol can read many file types, including PDB, CIF, SDF, MOL, PyMOL PSE files, and Spartan files, as well as output from Gaussian, GAMESS, MOPAC, VASP, CRYSTAL, CASTEP, QuantumEspresso, VMD, and many other quantum chemistry programs. Files can be transferred directly from several databases, including RCSB, EDS, NCI, PubChem, and MaterialsProject. Multiple files can be loaded and compared. A rich scripting language and a well-developed web API allow easy customization of the user interface. Features include interactive animation and linear morphing. Jmol interfaces well with JSpecView for spectroscopy, JSME for 2D->3D conversion, POV-Ray for images, and CAD programs for 3D printing (VRML export).

Celestia is an application for real-time 3D visualization of space, with a detailed model of the solar system, over 100,000 stars, more than 10,000 galaxies, and an extension mechanism for adding more objects.

JSmol is the extension of the Java-based molecular visualization applet Jmol (jmol.sourceforge.net) as an HTML5 JavaScript-only web app. It can be used in conjunction with the Java applet to provide an alternative to Java when the platform does not support that (iPhone/iPad) or does not support applets (Android). Used in conjunction with the Jmol JavaScript Object (http://wiki.jmol.org/index.php/Jmol_Javascript_Object), JSmol seamlessly offers alternatives to Java on these non-Applet platforms. JSmol can read all the files that Jmol reads. You can do all the scripting that Jmol does. You can create all the buttons and links and such that you are used to creating for Jmol. All of the rendering capability of the Jmol applet is there. JSmol has both a console and a popup menu. JSmol is integrated fully with JSME and JSpecView. A "lite" version of JSmol provides minimal functionality (balls and sticks only) for extremely small-bandwith apps. Released 1/12/2013

FreeMarket is a software package for running simple virtual prediction futures markets that uses the renowned PHP scripting language and MySQL database tools. It is designed for educational and medium-scale research applications.

Funiter (FUNction ITERation) is developed for educational purposes, generating graphs of several types for iteration of real and complex functions with comfortable switching between related types of graphs.

GeoGebra is free and multi-platform dynamic mathematics software for learning and teaching geometry, algebra, statistics, and calculus. Download the free software at http://www.geogebra.org. Find the source code at http://www.geogebra.org/trac

MathBase is a productivity environment for mathematical problems and technical applications. You will be able to draw geometrical scenes, compute functions, plot them, and write about them, all easy as 1-2-3!

The Minor Java Algebra Library aims to become an open, standard Java library for common problems in the domain of algebra and selected optimisation problems such as TSP and others. MiJAL is aimed to be used in educational envirements but not limited to.

This project concerns the development of human language technology resources, based on the approach to share or recycle resources between closely related language. http://gerhard.pro/closely-related-languages/

Salco32 is software to manage students school gradess in the way this is done in Flemisch secondary schools. There are 2 interfaces. An administrative one and a web-based interface for entering results. (mail me for info when interested)

A formal proof generator for the system of Fitch. Apart from Fitch diagrams it can also be used to generate truth tables or tree diagrams. Good support for hints and single-stepping. This program is used as the engine behind http://logica.ewi.tudelft.nl.

VTSurvey is a web-based tool enabling users to autonomously create and run online surveys, feedback or registration forms.

Components (Products) for Plone in educational settings (eduplone). Plone is an enterprise CMS based on Zope/CMF.