The big four BIM players include Autodesk Revit, Bentley Microstation, Graphisoft ArchiCAD and Nemetschek Vectorworks Architect.
For CAD formats Autodesk DWG is an industry de facto standard. The less proprietary format DXF is also a universal standard for information exchange. Autodesk’s less popular DWF format also has iOS support among apps. Bentley’s approach to iOS apps is its i-model format. One needs the Bentley desktop applications to create i-models.
We have included some open-standard 3D CAD formats with robust market use and acceptance. These are quite common on the MCAD side but also have use in AEC in limited form. Within this group is listed the IFC 2×3 file format for BIM.
We are going to start with propriatary formats first and then review the most popular open formats below.