C# .NET 3D File Manipulation and Conversion API can load and save 3DS, 3MF, AMF, FBX, IFC, BLEND, PCD, XYZ, DFX, OBJ, PLY, STL, USD, U3D and other formats...mesh/point cloud support DXF AutoCAD DXF FBX Autodesk FBX format...mesh/point cloud support. PDF 3D PDF Only supports standard U3D...