LaserGRBL Linux solution, LaserGRBL is one of the best software.
A Cross Platform and Open Source Electronics Design Automation Suite
Open-Source Shoemaking
Transformation utility to rotate coordinates in G-Code files
Cross-platform Open-source 2D CAD
cppcam is a 3D CAD app for drafting G-Code toolpaths for CNC Routers
A canvas library for generating technical drawings
Open Source Planar Linkage Mechanism Simulation and Synthesis Software
Free 3D Mobile CAD
AVR simulator IDE
Application Integration for HPC Multiphysics
Open Source Digital Laboratory - CAM module
Open DXFs with QCad
Free multiphysics simulation software package
Modular CNC software for Arduino controller
3D CAM program for CNC mills/lathes
Arduino Powered 60 RBG Pixel Clock, with 24h alarm and count down.
Parallelism without the Pain
A CAD/CAM Package for CNC GCode Creation