XMLmind XSL-FO Converter is an XSL-FO processor similar to Apache FOP, RenderX XEP or Antenna House XSL Formatter, except that it generates Microsoft® Word and OpenOffice/LibreOffice file formats rather than PDF. In practice, this means that the XSLT stylesheet you already use to generate PDF can now also generate:
RTF (can be opened in Word 2000+),
WordprocessingML (can be opened in Word 2003+),
Office Open XML (.docx, can be opened in Word 2007+),
OpenOffice (.odt, can be opened in OpenOffice/LibreOffice 2+).