SmartPOS (Includes->SmartERP distro of Idempiere ERP) is 100% Web
Free Software Medical Suite
Geodesy based library (geodetic and geocentric functions)
Cross-platform open source Redis DB management tool
FastoNoSQL it is GUI platform for NoSQL databases.
PyMOL is an OpenGL based molecular visualization system
open source python packages for X-ray MicroLaue Diffraction analysis
Compile a school timetable. 2 versions: php/mysql and Java (new)
CueMol - Molecular Visualization Framework
Store all your passwords in one secure encrypted database.
a browser based ballistics calculator for arrows and bullets
xmgrace and qtgrace plotting interface in python
Open-Source Project for Credit Risk Modeling
Program for drawing 3D surfaces from parametric equations