builds on the well-known Lucene search engine library to create an enterprise search server with a simple HTTP/XML interface. Using Solr, large collections of documents can be indexed
links to tutorials on XML, XSL, XML Schema, XPath, Schematron, CSS, XInclude and XSLT, using XML with Java servlets , RELAX NG, XSL-FO and links to APIs for Apache Xerces2, Apache SOAP, Saxon 6 XSLT Processor, Berkeley DB XML, and more
The Extensible Messaging and Presence Protocol (XMPP) is an open XML technology for real-time communication, which powers a wide range of applications including instant messaging, presence, media negotiation, whiteboarding, collaboration, lightweight midd