Cocoon-transformers-ko is a project mainly written in ..., it's free.
KO and Conifer Transformers
README – Created: May 2004 Last Revised: April 2011
Project: SETH (Search Everything Till it Helps)
This a cocoon transformer to be built against trunk. If you just want to use the transformer itself, you just need the jar file. The code dates back to an Access hackfest project, though has been through several revisions.
art rhyno