The best 3D Painting alternative to Sketchfab is Autodesk Mudbox. It's not free, so if you're looking for a free alternative, you could try Artist3D or Pointshop3D. If that doesn't suit you, our users have ranked more than 50 alternatives to Sketchfab and nine of them are 3D Painting Apps so hopefully you can find a suitable replacement. Other interesting 3D Painting App alternatives to Sketchfab are Blacksmith3D, Metasequoia, Hexagon and Curvy 3D.
Sketchfab alternatives are mainly 3D Painting Apps, but if you're looking for
3D Modelers or Digital Painting Tools you can filter on that. Other popular filters include
Free and
Open Source. 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 Sketchfab.