Downloading IFC Export Alternate UI 2013 1.27 from our website was free. The program lies within Photo & Graphics Tools, more precisely 3D Design. This free software is an intellectual property of Autodesk.
From the developer:
This application provides an alternate user interface for the export of IFC files from Autodesk® Revit® 2013. This new user interface offers additional options not provided in the standard Autodesk Revit user interface, and provides the ability to store setup configurations into the Autodesk Revit model for reuse.
You may want to check out more software, such as IFC Exporter for Revit 2012, Betavare Export OST File or CsvHelper Alternative, which might be similar to IFC Export Alternate UI 2013.