Solibri Model Viewer - Views Solibri Model Checker and IFC models on both Windows and Mac.
Tekla Structures BIM Software - Open approach to Building Information Modeling
FZKViewer - FZKViewer visualises the sematic data models IFC, CityGML und gbXML
midas Gen - Structural Analysis and Design
usBIM.viewer+ - Do you need to open an IFC file and modify it? usBIM.viewer+ is the only freeware certified by buildingSMART International that allows you to view, edit, convert and share BIM models in the IFC format. Basically, it is more than just a viewer!
Trimble Connect - Trimble Connect is a collaboration tool specially designed for Architecture, Engineering and Construction professionals such as architect, sub-contractors and project owners.