| DOMBuilder | A helper class for creating a W3C DOM tree | 
| FactorySupport | Support class for creating XML Factories | 
| MarkupBuilder | A helper class for creating XML or HTML markup. | 
| MarkupBuilderHelper | A helper class for MarkupBuilder. | 
| Namespace | A simple helper class which acts as a factory of  QName instances. | 
| NamespaceBuilder | A helper class for creating namespaces for GroovyMarkup | 
| NamespaceBuilderSupport | A helper class for creating namespaced GroovyMarkup | 
| QName |  | 
| SAXBuilder | A builder for generating W3C SAX events. | 
| XmlUtil | Used for pretty printing XML content and other XML related utilities. |