VTD-XML is a suite of innovative XML processing technologies centered around a non-extractive XML parsing technique called Virtual Token Descriptor (VTD).
an XML parser library written in C. It is a stream-oriented parser in which an application registers handlers for things the parser might find in the XML document
"Xerces-C++ is a validating XML parser written in a portable subset of C++. Xerces-C++ makes it easy [sic] to give your application the ability to read and write XML data."
"Xerces-C++ is a validating XML parser written in a portable subset of C++. Xerces-C++ makes it easy [sic] to give your application the ability to read and write XML data."