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...3D Studio Max’s ASCII Scene Exporter format RVM Aveva Plant Design...Industry Foundation Classes OBJ Wavefront Obj Including mesh/point cloud...