For non-license holders who need access to ArchiCAD designs, this free BIMx download provides an exceptionally complete 3D viewer. The feature set of this free viewer is extensive and includes basic functions for a viewer - printing and annotating, but an extended set of features.
You'll find complete information on the BIMx desktop viewer in this user guide :
The BIMx viewer is a free download for both Windows and Mac workstations. It is also possible to take the BIMx viewer on-site with the BIMx Viewer for mobile devices.
More information on the BIMx viewer for mobile devices - including iOS, Android, and Kindle Fire.