Web Directory

» CL-XML
   James Anderson's collection of Common Lisp modules for XML includes XQuery support.
   http://pws.prserv.net/James.Anderson/XML/

» DataDirect XQuery
   Java software that implements XQuery and XQJ standards, allowing developers to access both relational and XML data sources.
   http://www.xquery.com

» Qexo (Kawa-XQuery)
   A partial implementation of XQuery. It compiles queries down to Java bytecodes using the Kawa framework.
   http://www.gnu.org/software/qexo/

» SQLSummit Catalog of XQuery Engines, Processors and Providers
   This catalog of XQuery implementations includes processors, embeddable engines and database managers. Includes download links and contact info.
   http://www.sqlsummit.com/XQueryProv.htm

» Stylus Studio: XQuery Tools
   Development tools for editing, mapping, debugging, and profiling (benchmarking).
   http://www.stylusstudio.com/xquery.html

» XML Query Engine
   Fatdog Software's full-text XQL search engine, with partial support for XQuery. Eval version available for download.
   http://www.fatdog.com/

» XQuantum Database
   Cognetic Systems' research implementation (in Java) of a subset of XQuery, along with its type inference system.
   http://www.cogneticsystems.com/xquery/xquery.html

» XQuench
   A project to create an open-source XQuery parser and engine in Java.
   http://sourceforge.net/projects/xquench/

» Xcache Rainbow Project
   A web-based XML query engine and tools, which use a cache of results from previous queries.
   http://davis.wpi.edu/dsrg/

» Xquery Lite
   A query language for XML, based on XQuery 1.0. Includes an implementation for PHP.
   http://phpxmlclasses.sourceforge.net/xquery_lite.html

» oXygen XML Editor / XQuery Debugger
   XML Editor with editing and debugging support for XQuery. Allows XQuery execution against multiple XML databases: eXist, Berkeley XML DB, X-Hive, MarkLogic, TigerLogic.
   http://www.oxygenxml.com/xquery_debugger.html