XML: http://www.probp.com/publib/xml.html

The XML parser, a product from Binding Time Limited, is available here. The main predicate is xml_parse(XMLCodes,PlDocument) where one of the arguments is input and the other is output. Two predicates are added to facilitate development of standalone applications: the predicate xml2pl(XMLFile,PLFile) converts a document in XML format into Prolog format, and the predicate pl2xmll(PLFile,XMLFile) converts a document in Prolog format into XML format.