build123d vs nTop
| build123d | nTop | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | Free | — |
| Open source | No | No |
| Platforms | Linux, macOS, Windows | Linux, Windows |
| Free plan | Yes | — |
| Modeling method | parametric | parametric |
| Assembly design | Yes | Yes |
| Sheet-metal tools | Yes | — |
| Surface modeling | Yes | Yes |
| Cloud collaboration | No | — |
| Supported platforms | Windows, macOS, Linux (Python package) | Windows 11; Red Hat Enterprise Linux 8.9 for nTop Automate |
| File import and export | Import: STEP, STL, 3MF; export: BREP, DXF, glTF, OBJ, STL, STEP, SVG, 3MF | CAD: STEP, Parasolid, CATIA V5, Creo, Inventor, Siemens NX, SolidWorks, ACIS; mesh: STL, OBJ, PLY, 3MF, OFF; CAE: Abaqus, ANSYS, LS-DYNA, Nastran, Patran, CGNS, UNV; other: implicit, LTXC, CSV, VDB, PNG, CLI and manufacturing slice formats |
Both are listed in Best 3D CAD Software. On Freedom251, build123d scores higher on our published basis.