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...Collada DRC Google Draco Including mesh/point cloud support DXF AutoCAD...OBJ Wavefront Obj Including mesh/point cloud support. PDF 3D...