Typically catpart to dwg conversion is used for conversion (export) of 2D or 3D data from CATIA part (.catpart) to AutoCAD DWG format. The most obvious choice to convert catpart to dwg is of course CATIA, but not everyone has access to this software, which means would have to rely to some 3rd party alternative like Inventor or Alibre.
Unfortunately for Mac users, there is not many professional CAD/3D modeling tools for macOS/OS X that can work with CATIA formats, so using a virtual machine (Parallels Desktop) to run Windows apps can be a viable alternative, especially if you just need quick catpart to dwg export and do not need the program full fime.Open CATPART file Open DWG file
A set of 3D modeling tools
A 3D product data optimalization software
3D CAD/CAM tool for product development
Autodesk Inventor is modeling application used to create 3D digital prototypes
A PLM/CAD/CAM/CAE software suite
A 3D CAD translation software