3DXML format is usually exported from software made by Dassault Systems and because it is a proprietary format which has to be licensed for use it is not that widely supported in other programs. However you may find some dedicated CAD converters like the CrossManager program.
Convert Dassault Systems Universal 3D XML document to CATIA part data.
We found 3 software records in the database related to .3dxml to .catpart file format conversion.
Microsoft Windows software - convert 3dxml to catpart on Windows
A PLM/CAD/CAM/CAE software suite
Convert from 3dxml file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned 3dxml to catpart. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
A CAD converter with huge format support
A CAD visualizaton, analyzation and translating system