Se trata de ARF, les dejo el comentario original de la pagina :
ARF is an open source framework specifically designed for MOSS and WSS which makes creating accessible SharePoint publishing sites easier.
By giving you control over the HTML produced, ARF allows you to re-create designs exactly as they are meant to be.
By making use of XML and XSLT development time is dramatically reduced.
ARF is compatible with both MOSS and WSS, making accessible SharePoint sites easy with either product. In fact this site has been developed using WSS v3 and ARF.
Se puede Descargar Gratuitamente, Felicitaciones a los 2 MVPs Autores de este trabajo de Excelente Calidad.