IFC is an open and non-proprietary file format that allows full interoperability and exchange of data without the risk of introducing errors or loss of information. It is therefore the common language that allows the various professionals and role players of construction process to dialogue with each other. A fundamental characteristic of the BIM process, in fact, is the collaboration between the various team members involved in the different phases of the structure’s life cycle to insert, extract, update or modify the information present in the model. usBIM.viewer+ is the free IFC file viewer with which you can open and view and download IFC coordination view 2X3 files even when produced with different BIM authoring software; furthermore, you can also open other types of 3D models (.skp, .dwg, .dae, etc.) by converting them to the IFC format free of charge.