An IFC file is an open, non-proprietary file format that enables interoperability and data exchanges without errors or loss of information. It is therefore the common language that allows the different actors of the construction process to dialogue with each other.
A fundamental characteristic of BIM, in fact, is the collaboration between the different professional roles involved in the different phases of a building or infrastructure's life cycle to insert, extract, update or modify the model's information.
With usBIM you can open and view IFC 2X3 files of any type produced with the different BIM authoring solutions available on the market; you can also open other types of 3D files (.skp, .dwg, .dae, etc.) converting them to the IFC format.