Polygon and line clipping and offsetting library (C++, C#, Delphi)
PySCeS is the Python Simulator of Cellular Systems
Framework for Systems Biology
software for email automation (newsletters, transaction mails, etc.)
Finds vulnerabilities in C/C++ source code
IDLE Extensions
multiple protocol simulator written in python
Scientific Database Format
DOOM / Heretic / Hexen source port with enhanced graphics and UI
BeaEngine disasm project
Free flexible open source todo manager featuring hierarchical tasks
On-screen virtual keyboard
An Arch based Linux distribution for Android developers