Web-based protein structure viewer and analysis tool
An interior design application to draw house plans & arrange furniture
FlightGear Flight Simulator: free open-source multiplatform flight sim
An interactive viewer for three-dimensional chemical structures.
very good CAD software
svg editor: Easily create documents for math, physics, chemistry...
JavaScript-Based Molecular Viewer From Jmol
Free 3D Mobile CAD
Braille & ASCII world map renderer for your console
Fractals generator with powerful functionality.
Free OMR - OCR web sofware based on javascript and PHP
MathJax support for MathML content embedded in SVG documents
Interactive spherical geometry software.
Open Source CAD
OSGeo project deegree