Cathbad (KATH-vath) is the chief druid in the court of Conchobar mac Nessa in the Ulster Cycle of Irish Mythology.

See http://myddrin.com/trashdeerwood/index.php?cat=2 for addtional development information. Cathbad is an xml-defined language for the creation of distributed user interfaces. This means an application may be centrally installed on a webserver.