very good CAD software
Beginner-friendly CAD software available for both web and desktop.
GDSread reads and converts Calma GDS stream files .
Software for electromagnetic simulation
Extensible Line-drawing & Polygon-filling Rasterization Libs for Java
Free CAD software
OpenNum lets you distribute solvers with a nice graphical interface
2D CAD especially designed to draw steam locomotives
Simple CAD program
This plugin exports G-Code for a wirecutter
EuroNCAP Grid Point Calculator
Simple CAD program