The idea of ReXSL is simple: to make a RESTful XML API available in a browser-friendly format renderable with XSL stylesheets. You develop your Web application as a RESTful "Web service", while XSL stylesheets transform it into an HTML Web site.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.