The best CAD alternative to Autodesk Fusion is FreeCAD, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Autodesk Fusion and many of them are CAD Software so hopefully you can find a suitable replacement. Other interesting CAD Software alternatives to Autodesk Fusion are SketchUp, SOLIDWORKS, Onshape and OpenSCAD.
Autodesk Fusion alternatives are mainly CAD Software, but if you're looking for
3D Modelers or 3D Printing Tools you can filter on that. Other popular filters include
Linux,
Free and
3D Modelling. You can also filter by region, for example
EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to Autodesk Fusion.
It's the most similar to Fusion 360 while still being free.