CADAM is the open source text-to-CAD web application
A math-inspired CAD program in haskell. CSG, bevels, and shells
a parametric 3D CAD modeler
DXF2GCODE: converting 2D dxf drawings to CNC machine compatible G-Code
A Cross Platform and Open Source Electronics Design Automation Suite
Free and open source pattern design software
conducteö - logiciel de calcul des ponts thermiques linéiques
An EnergyPlus shell for parametric studies and more ...
very good CAD software
Software for electromagnetic simulation
GDSread reads and converts Calma GDS stream files .
Open-Source Shoemaking
Cross-platform Open-source 2D CAD
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
Geometric kernel for CAD programs using an atomic approach