• XML - Extensible Markup Language

<http://www.w3.org/XML/>, <http://en.wikipedia.org/wiki/XML>, <http://pl.wikipedia.org/wiki/XML>

• DOM - Document Object Model

<http://www.w3.org/DOM/>,

<http://pl.wikipedia.org/wiki/Obiektowy_model_dokumentu>, <http://en.wikipedia.org/wiki/Document_Object_Model>

• XSL - Extensible Stylesheet Language

<http://www.w3.org/Style/XSL/>,

<http://pl.wikipedia.org/wiki/XSL>, <http://en.wikipedia.org/wiki/Extensible_Stylesheet_Language>

• XSD - XML Schema Definition

<http://www.w3.org/XML/Schema>,

<http://en.wikipedia.org/wiki/XML_Schema> <http://pl.wikipedia.org/wiki/XML_Schema>

• XML namespaces

<http://www.w3.org/TR/REC-xml-names/>,

<http://en.wikipedia.org/wiki/XML_Namespace>, <http://pl.wikipedia.org/wiki/Namespaces_in_XML>

• SGML/XML, interpret XML Namespaces, Validate an SGML/XML DOM-term

<http://www.swi-prolog.org/packages/sgml2pl.html>

• RDF parser

<http://www.swi-prolog.org/packages/rdf2pl.html>

• SWI-Prolog and the Web -article

<http://hcs.science.uva.nl/projects/SWI-Prolog/articles/TPLP-plweb.pdf>

• SWI-Prolog Semantic Web Library

<http://www.swi-prolog.org/packages/semweb.html>

• The PiLLoW Web Programming Library

<http://www.clip.dia.fi.upm.es/Software/pillow/pillow_doc_html/pillow_doc_toc.html>

• bi-directional XML parser <http://www.zen37763.zen.co.uk/xml.pl.html>,

<http://www.probp.com/publib/xml.html>

• Prolog to XML translator <http://www.amzi.com/manuals/amzi7/libs/xml.htm>

• XML Processing <http://www.ezy-software.com/ezyprolog/EZY_Prolog_-_XML_Processing.htm>

• XML terms <http://www.ifcomputer.co.jp/MINERVA/Manual/Reference/Predicates/XML/>

• Support for XML - DOM jipxxml package <http://www.ugosweb.com/Download/JIPrologRefManual.pdf>