Manage: Navisworks
At its core, is a aggregation and coordination tool. It does not create native geometry (like Revit or AutoCAD). Instead, it ingests dozens of file formats (NWC, RVT, DWG, IFC, DGN, SKP, etc.) and combines them into a single, federated model.
For estimators, this bridges the gap between "BIM model" and "Bill of Materials." Navisworks Manage