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a parametric 3D CAD modeler
DXF2GCODE: converting 2D dxf drawings to CNC machine compatible G-Code
Free and open source pattern design software
A Cross Platform and Open Source Electronics Design Automation Suite
conducteö - logiciel de calcul des ponts thermiques linéiques
An EnergyPlus shell for parametric studies and more ...
FEATool Multiphysics is an easy-to-use FEA and CFD Simulation Toolbox
Open-Source Shoemaking
Python script for calculation of deflection of elastic ropes.
Software for electromagnetic simulation
Cross-platform Open-source 2D CAD
Python tool for section property evaluation and stress calculation
Static and Dynamic Structural Analysis of 2D and 3D frames.
CAD Application entire developed in Python
A canvas library for generating technical drawings
Free CAD software
Open Source Planar Linkage Mechanism Simulation and Synthesis Software
OpenNum lets you distribute solvers with a nice graphical interface