The ggRhinoIFC plugin allows for a range of tools to import, manipulation, conversion and export of IFC files within Rhino.
The RhinoIFC plug-in allows for the Import and Export of IFC files to and from Rhino with a number of different options. See the page on Importing and Exporting for more information.
Conversion tools allow for the conversion of other text-based OPEN file formats (such as XML and STEP) to IFC files. Some of these tools include conversion from LandXML and STEP.
Rhino IFC Layers is Geometry Gyms tools for allowing IFC file creation directly from Rhino by assigning entities types to a hierarchical layer system separate to. Active context menu allow you to select from available classes and also set Uni-class.
GeometryGym allows the import and interaction of IFC files through an interactive tree viewer in Rhino. Learn more about this here:
For IFC file tools specific to Rhino
There are also a bunch of more generic IFC file tools which can be accessed within Rhino.
You can access the IFC Rhino commands from either the Rhino command line or the ggRhinoIFC menu bar. If you start to type ggIFC into the Rhino command line you can see a populated list of available commands.