Open IFC Viewer supports opening of IFC (text file format known as Step Physical File), ifcXML2X3 and HDF5 (consider it as binary IFC) files. All three types of files can be packed into IFCZIP which is also supported. Open IFC Viewer supports working with BCF (BIM Collaboration Format) files. Oda Viewer additionally allows to open all formats we support, as .dwg, .dgn, Revit, Navisworks, STL, OBJ.