In Autodesk Navisworks you can open files originated from a variety of CAD applications.
In Autodesk Navisworks you can open NWD files (published data), and DWF files.
You can combine these files together, and create a single Autodesk Navisworks file with a whole-project view of your model. This file brings together geometry and data created by multi-disciplinary teams, and enables you to explore and review complex models in real-time.