Blender - Blender is the open source, cross platform suite of tools for 3D creation.
BIM Vision - Freeware IFC model viewer.
Cinema 4D - Cinema 4D is a 3D modeling, animation, motion graphics and rendering application.
Solibri Model Viewer - Views Solibri Model Checker and IFC models on both Windows and Mac.
Autodesk Maya - Maya is 3D computer animation software with powerful modeling, rendering, simulation, texturing, and animation tools for artists, modelers, and animators.
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!