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...mesh/point cloud support DXF AutoCAD DXF FBX Autodesk FBX format...From 7.2 to 7.5, both ASCII/Binary. glTF Khronos Group’s glTF...