Skip to main contentSkip to site search GTeam is the easiest platform for project teams to collaborate and share documents, files and 3D building information online. IDEA Architecture is a low-cost 3D Architectural Software renown by experts to be the BIM Software offering the easiest transition for AutoCAD users. Freeware IFC model viewer. It allows to view the virtual models coming from CAD systems like Revit, Archicad, Advance, DDS CAD, Tekla, Nemetschek VectorWorks, Bentley, and others without necessity of having commercial licenses of these systems. helps you capture building design concepts digitally anytime, anywhere ideas strike. Use real-world site information to help create forms in context and support early design decisions with real building data.