- How to open DWG filesFree viewers for AutoCAD drawings, DWG to DXF and back, and Revit, Inventor and Fusion files.
- How to open SketchUp filesSKP files in SketchUp's free web app, and how to get an STL out of one.
- How to open SolidWorks filesSLDPRT, SLDASM and SLDDRW files without a SolidWorks license, and JT and Parasolid files.
- STL to G-codeSlicing a model for a 3D printer: which free slicer, and the settings that matter.
- Microsoft 3D Viewer alternativesWhat happened to the Windows app, and what opens its files now.
The formats table lists what opens here, what each tool reads and what it saves, and nothing you open is uploaded.