C# .NET 3D File Manipulation and Conversion API can load and save 3DS, 3MF, AMF, Fbx, DFX, Obj, PLY, STL, USD, U3D and other formats...support DXF AutoCAD DXF FBX Autodesk FBX format. From 7.2 to 7...with Draco extension OBJ Wavefront Obj Including mesh/point cloud...