A CAD application for creating virtual LEGO models
DSpice: Design and Simulation of Circuits using Spice
Cross-platform Open-source 2D CAD
A canvas library for generating technical drawings
Free CAD software
OpenNum lets you distribute solvers with a nice graphical interface
Free 3D Mobile CAD
An easy and flexible mathematical programming environment for Python.
This plugin exports G-Code for a wirecutter
walterbot: Virtual presence device www controlled with a raspberrypy
Simple CAD program
Open Source CAD