XML
The eXtensible Markup Language

Misc

  • CLOCC comes with an XML parser in CLOCC/CLLIB/xml.lisp
  • The Wilbur RDF toolkit (Sourceforge page) in Common Lisp is available ... though it's worth noting that Wilbur is an RDF toolkit, not an XML toolkit—it just happens that it can read RDF/XML, an XML serialisation of RDF.

See also

Other Lisp Markup Languages