CADAM is the open source text-to-CAD web application
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
very good CAD software
An EnergyPlus shell for parametric studies and more ...
Open-Source Shoemaking
GDSread reads and converts Calma GDS stream files .
A math-inspired CAD program in haskell. CSG, bevels, and shells
Software for electromagnetic simulation
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
Geometric kernel for CAD programs using an atomic approach
OpenNum lets you distribute solvers with a nice graphical interface