Autodesk® Navisworks® Freedom software is the free* viewer for NWD and DWF™ file formats. Use Navisworks Freedom to extend the whole-project view to all project stakeholders, helping to improve communication and collaboration. Multidisciplinary models created in a broad range of applications—including information from Building Information Modeling (BIM), digital prototypes, and process plant design—can be combined into a single integrated project model and published into the NWD format using Autodesk Navisworks Manage or Autodesk Navisworks Simulate software. The published file provides access to model hierarchy, object properties, and embedded review data, including viewpoints, animations, redlines, and comments.