XINS 2.1 , an open-source Web services development framework, has been
released.

XINS accepts the following protocols: REST, SOAP, XML-RPC, XML, Yahoo!
JSON and JSON-RPC.

From the specification of the API written in simple XML, XINS generates:
 * Documentation of the specifications and implementations in HTML and
in OpenDocument format
 * Test forms, for testing your applications with a browser
 * Client-side Java code, supporting load-balancing, fail-over and
time-out handling
 * Server-side Java skeleton
 * Web application (WAR file)
 * WSDL, for SOAP-interoperability
 * SMD, for the Dojo toolkit
 * Unit test code, based on JUnit
 * Stubs, typically used for testing

The 2.1 release adds the following main features:
 * Start the API with java -jar <api name>.war
 * Improved generated specification in OpenDocument Format
 * Include/exclude calling convention with ACLs
 * New calling convention that maps SOAP request and response as the
wsdl2api command mapping.
 * Swing Graphical User Interface

Links:
Web site: http://xins.sourceforge.net/
XINS demos: http://xins.sourceforge.net/demo.html
Documentation: http://xins.sourceforge.net/documentation.html
User guide: http://xins.sourceforge.net/docs/index.html
101 new features in XINS 2.1 presentation:
http://xins.sourceforge.net/presentations/xins2.1-features.pdf