a parametric 3D CAD modeler
Link branch FreeCAD
Physics Simulation Made Easy" (Fully Integrated FEA, FEniCS
Examples and demos for the pythonocc CAD package
The programmer's solid 3D CAD modeller
An interactive viewer for three-dimensional chemical structures.
DXF2GCODE: converting 2D dxf drawings to CNC machine compatible G-Code
A Full PLM system based on odoo
very good CAD software
Draw vector graphics to scale using a descriptive language
CFDTool - Easy to Use Computational Fluid Dynamics (CFD) Toolbox
2D CAD for precise drawing
3D/2D Concrete Reinforcement in Bentley MicroStation
Extensible Line-drawing & Polygon-filling Rasterization Libs for Java
A Windows-based viewer currently supporting CDR & 2D DXF files
Cross-platform Open-source 2D CAD
CAD Draw, CAD Control, printing, C/C++,.NET Source Codes
Draw curves, colored 2D maps with CAD capabilities
2D CAD software
Static and Dynamic Structural Analysis of 2D and 3D frames.
converts between IGES file and text file
SOLVESPACE is a free (GPLv3) parametric 3d CAD tool.
E-XD++ Visualization Source Code Library with C++
Design your own pottery for 3D printing in full color