FreeCAD - An open-source parametric 3D modeler
PowerMill - PowerMill is an advanced CAM software that comes with a flexible way to get done with your complex high-speed and five-axis machining processing.
SolidWorks - Dassault Systèmes SolidWorks Corp. develops and markets 3D CAD design software, analysis software, and product data management software. SolidWorks is the leading supplier of 3D CAD product design engineering software.
SOLIDWORKS CAM - SOLIDWORKS CAM is an add-in that provides you the leverage of computer-aided manufacturing, allowing you to generate g-code and m-code for CNC machining of different parts.
LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.
MeshCAM - MeshCAM is the fastest way to generate gcode