Works on XOTcl, OpenACS, [XoWiki], NX, the Next Scripting Language, NaviServer.Head of the Institute of Information Systems and New Media at the Vienna University of Economics and Business Administration (http://nm.wu-wien.ac.at). Member of the OpenACS Core Team (http://openacs.org), Member of the Board of the DotLRN Consortium (http://www.dotlrn.org)