The aim of SCEW is to provide an easy interface around the XML Expat parser, as well as a simple interface for creating new XML documents. It provides functions to load and access XML elements without the need to create Expat event handling routines every time you want to load a new XML document. It uses a DOM-like object model for new or parsed XML documents, supports loading concatenated XML documents, can copy and compare full XML documents, elements, or attributes, writes XML documents to multiple outputs, and allows adding new I/O sources easily. It supports UTF-8, ISO-8859-1, and US-ASCII encoding (and UTF-16 in Windows).
Xmldego provides XML parsing and/or transformation by binding callbacks to XML parsing events in the context of an XML element. While SAX, for example, calls your callbacks on every start tag, Xmldego will do so only for the child axis path you request. Xmldego is particularly useful when only smaller bits of a much larger XML file need to be processed, because only interest in the relevant bits need to be coded. In contrast to a DOM parser, much larger XML files can be processed, because the whole file is not loaded into memory.