LaserGRBL Linux solution, LaserGRBL is one of the best software.
Open-Source Shoemaking
Cross-platform Open-source 2D CAD
cppcam is a 3D CAD app for drafting G-Code toolpaths for CNC Routers
CAD Application entire developed in Python
A canvas library for generating technical drawings
Open Source Planar Linkage Mechanism Simulation and Synthesis Software
AVR simulator IDE
Библиотека УГО компонентов для Kicad
Parallel finite element analysis
Special Raspbian image system
OpenFOAM UI based on web
3D CAM program for CNC mills/lathes
Arduino Powered 60 RBG Pixel Clock, with 24h alarm and count down.