Potter.
Tools

3d viewer

Turn it over in your hands

Drop in a GLB, GLTF, OBJ, STL, PLY, FBX or 3MF model and orbit, zoom and inspect it. Got a .gltf or .obj with textures? Drop the whole lot in together.

drop a model here

drag to orbit · right-drag to pan · scroll to zoom · models you open are saved to Potter's storage