The TEIViewer is a browser-based application built on a modification of the XHTML branch of the Text Encoding Initiative XSL stylesheet family and the jQuery JavaScript Library.
AJAXSLT is an implementation of XSL-T in JavaScript, intended for use in fat web pages, which are nowadays referred to as AJAX applications. Because XSL-T uses XPath, it is also an implementation of XPath that can be used independently of XSL-T.