XML parser is a software module to read documents and a means to provide access to their content. XML parser generates a structured tree to return the results to the browser. An XML parser is similar to a processor that determines the structure and properties of the data. An XML parser can read a XML document to create an output to generate a display form. There are a number of parsers available and a few of them are listed below:

The Xerces Java Parser

The main applications of the Xerces Java parser is the building up of the XML-savvy web servers and to ensure the integrity of e-business data expressed in XML.

expat XML parser

The expat XML parser is written in C and runs on UNIX or W32.The expat XML parser is not a validating processor that is you can use it only to write an XML parser. This parser is contributed by James Clark.

XP and XT

XP is a Java based, XML validating parser and XT is an XSL processor. Both are written in Java.XP detects all non well formed documents. It gives high performance and aims to be the fastest conformant XML parser in Java. On the other hand XT is a set of tools for building program transformation systems. The tools include pretty printing; bundling of systems, tree transformation etc,

SAX

Simple API for XML (SAX) was developed by the members of a public mailing list (XML-DEV).It gives an event based approach to XML parsing. It means that instead of going from node to node, it goes from event to event. SAX is an event driven interface. Events include XML tag, detecting errors etc,

XML pull parser

It is optimal for applications that require fast and a small XML parser. It should be used when all the process has to be performed quickly and efficiently to input elements.

XML parser for Java

It runs on any platform where there is Java virtual machine. It is sometimes called XML4J.It has an interface which allows you to take a string of XML formatted text, pick the XML tags and use them to extract the tagged information.