by Apache Xerces™ Project in C++ Libraries for C++Builder
Xerces C++ is a validating XML parser written in a portable subset of C++. Xerces makes it easy to give your application the ability to read and write XML data. A shared library is provided for parsing, generating, manipulating, and validating XML documents.
by Expat development team in C++ Libraries for C++Builder
This is Expat, a C library for parsing XML, started by James Clark in 1997. Expat is a stream-oriented XML parser. This means that you register handlers with the parser before starting the parse. These handlers are called when the parser discovers the associated structures in the document being parsed. A start tag is an example of the kind of structures for which you may register handlers.