If you’re in Europe and use AutoCAD Map 3D you may find this Technology Preview from Autodesk interesting. Project Inspire for AutoCAD Map 3D. Description about it:
Today, Government organizations and an increasing number of private sector companies are adopting Open Geospatial Consortium (OGC) specifications when implementing new geospatial solutions, helping drive interoperability and easier data exchange across borders and between communities. In Europe, this is primarily driven by the Infrastructure for Spatial Information in the European Community (INSPIRE) directive. // more
Developed in support of the INSPIRE directive, the free* Project Inspire Technology Preview for AutoCAD® Map 3D® 2012 software, helps AutoCAD Map 3D users to find, bind, and publish INSPIRE compliant metadata using an open standard CSW (catalog service for the web) interface. With Project Inspire, Map 3D users can more easily share environmental spatial information locally and over the web.
You find Project Inspire for AutoCAD Map 3D at Autodesk Labs.