Emgu CV is a cross platform .Net wrapper for OpenCV
Another drawing editor for LaTeX with PSTricks & TikZ
Nesting SDK, Library
Converts between many 3D data formats
3D .NET engine for Windows, Linux, Mac
library to read dwg & read/write dxf files
Qt library for viewing DXF files
Ccide is a Decision Table preprocessor.
Java Persian Calendar library
Multi-User Database Interpreted BASIC Environment