GbXML

gbXML (Green Building XML) is a format for describing the attributes, features, and layout of buildings in XML form. It is intended as a standardized format for BIM (Building Information Models) data (as opposed to proprietary formats such as DDS-CAD). (IFC is another such format.)

Schema

 * Latest schema (6.01 as of this writing)
 * Archived past schemas

Sample files

 * A number of samples are linked here

Software

 * List of software supporting gbXML

Links

 * Official site
 * Wikipedia article
 * Exporting to gbXML (Autodesk)
 * gbXML Webcast