Xerces

Xerces is a family of software packages for parsing and manipulating XML, part of the Apache XML project. Xerces (named after the Xerces Blue butterfly) provides world-class XML parsing and generation.

In particular the Java XML version was one of the original Java XML parsers and is still (as of 2002) the most popular. However, there is also a C++ implementation.

The library itself implements an number of the standard APIs for XML parsing, including DOM, SAX and SAX2.