DXF2GCODE: converting 2D dxf drawings to CNC machine compatible G-Code
a parametric 3D CAD modeler
CFDTool - Easy to Use Computational Fluid Dynamics (CFD) Toolbox
CAD 2D for Land Surveying and Civil
This plugin exports G-Code for a wirecutter
2.5D CAD CAM emphasis on CAM and toolpaths