a parametric 3D CAD modeler
CAD Draw, CAD Control, printing, C/C++,.NET Source Codes
Link branch FreeCAD
A CAD application for creating virtual LEGO models
The programmer's solid 3D CAD modeller
A python parametric CAD scripting framework based on OCCT
A math-inspired CAD program in haskell. CSG, bevels, and shells
A free and open source multiplatform 3D parametric modeler
Physics Simulation Made Easy" (Fully Integrated FEA, FEniCS
Examples and demos for the pythonocc CAD package
Fronend CAD flow for IP creation, QC, IP Packaging and HandOff
Cross-platform Open-source 2D CAD
Virtual Satellite
An interactive viewer for three-dimensional chemical structures.
Model Railway CAD program
DXF2GCODE: converting 2D dxf drawings to CNC machine compatible G-Code
A Cross Platform and Open Source Electronics Design Automation Suite
very good CAD software
An EnergyPlus shell for parametric studies and more ...
Static and Dynamic Structural Analysis of 2D and 3D frames.
Open-Source Multiphysics FEA (FEM) Package
A Full PLM system based on odoo
KiCad EDA Suite in PortableApps.com format