Free and open source pattern design software
Software for electromagnetic simulation
Software for calibration of hyperelastic constitutive models
Open Source Planar Linkage Mechanism Simulation and Synthesis Software
OpenNum lets you distribute solvers with a nice graphical interface
Precise gear geometry generator for spur and helical gears
Open Knowledge on engineering development.
This plugin exports G-Code for a wirecutter
An Open source Analysis and SImulation Toolbox for Fuel Cells
CNC control software
Open Source FabLab Project
dedalo is a 2d cad drawing software written in python3.