JACo XML is a handy, tiny component designed to help you with your work with XMLs in Java. The idea is to see every XML as an object instance and then work with it.
TXS provides a basic HTTP server. Its own XML Script language can produce, via XSL-T, XForms or XHTML pages (tested with FireFox). It can also be used to read and generate CSV, XML or ZIP files. HTML page capture and email generation also available.