Official W3C site describing this language for addressing parts of an XML document which is designed to be used by both XSLT and XPointer. (W3C Recommendation 16 November 1999)

A tree-pattern schema language built on top of XSL with XPath.

Provides simple functionalities to access a DOM tree using XPath 1.0. This module builds on top of the Document Object Model Level 3 Core. [W3C Working Draft 31 October 2001]

Tutorial which covers syntax, locations, expressions, functions and examples.

Tools for editing, generating and testing XPath 1.0 and XPath 2.0 expressions.

This package implements the full W3C XPath recommendation for the OCaml language; it may work with the output of PXP (XML parser), or with any implementation of the XPath data model.

XPath compliant parsing and evaluation module for the Xerces-C, allows arbitrary selection of nodes from an XML document.

A tutorial with several examples and pictures which can be downloaded for off-line use.

An XPath processor built for J2ME, suitable for mobile phones.