ggRhinoIFC 1.3.21 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The actual developer of the free program is Geometry Gym Pty Ltd. GgRhinoIFC is included in Photo & Graphics Tools. The following versions: 1.3, 1.2 and 1.0 are the most frequently downloaded ones by the program users. We recommend checking the downloaded files with any free antivirus.
From the developer:
ggRhinoIFC is a plugin that enables model exchange between Rhino/Grasshopper and other IFC capable application. The plugins are released for latest Grasshopper, version 0.9.0051 or newer. Commercial users need to have a trial license to run this app; students/academics can request free access to the tools.
You may want to check out more software, such as Smart Map or stCAD, which might be related to ggRhinoIFC.