Restlet is a lightweight REST framework for Java. The project is composed of two parts, the Restlet API (alternative to Servlet API) and a reference implementation (Noelios Restlet Engine). It supports all REST concepts (resource, representation, data, connector, components, etc.) and is suitable for both client and server REST applications. The server connectors provided are HTTP(S), AJP (via Mortbay's Jetty or an adapter Servlet) and the client connectors are HTTP(S), File, JDBC, and SMTP(S).
Several HTTP bugs have been fixed. Changes to the ServerServlet have been reverted back to the 1.0.2 behavior. Spring Javadocs have been clarified and fixed. Jetty has been upgraded to version 6.1.5.
URL: Restlet - Lightweight REST framework for Java