SketchUp - 3D for Everyone
Tekla Structures BIM Software - Open approach to Building Information Modeling
ArchiCAD - ArchiCAD 16 enables BIM modeling with a new green approach to planning. Create anything you need with ArchiCAD's flexible new features for design.
BIM Vision - Freeware IFC model viewer.
e-Builder - e-Builder is a construction program management solution that manages capital program cost, schedule, and documents.
FZKViewer - FZKViewer visualises the sematic data models IFC, CityGML und gbXML