Welcome to the IFC Export for Revit Sourceforge project! This project contains the .NET code and DLL used by the Revit 2012 family of products that support IFC export. The open source version can override the version that comes standard with shipped Revit. The base version of the code here is based on R2012 UR1. The latest code is based on R2012 UR2. Feel free to ask any questions in the Discussion area, or download and play with the code yourself.