a parametric 3D CAD modeler
Free and open source pattern design software
conducteö - logiciel de calcul des ponts thermiques linéiques
LibrePLM integrates CAD editors in Odoo / LibrERP
Open-Source Multiphysics FEA (FEM) Package
cppcam is a 3D CAD app for drafting G-Code toolpaths for CNC Routers
Free CAD software
Open DXFs with QCad
2.5D CAD CAM emphasis on CAM and toolpaths
CNC machine code generation for 3D models
ALST is a CAD for all imaginable logic systems (binary, ternary, etc)
Gesture based movement with CATIA