IFC viewer is free. (Picture courtesy of ODA.)
The Open Design Alliance (ODA) has a strong reputation for providing a series of software toolkits that enable developers of CAD and building information modeling (BIM) software to better support software interoperability via a variety of common file formats, such as AutoCAD drawings (DWG), Autodesk Revit (RVT) projects or Industry Foundation Classes (IFC).
ODA collaborates directly with buildingSMART, the international organization responsible …
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