Jersey is the open source, production quality, JAX-RS (JSR 311, JSR 339) Reference Implementation for building RESTful Web services.
Jersey is an open source framework for developing RESTful web services in Java and the production-ready reference implementation for JAX-RS 1.1 (JSR-311) and JAX-RS 2.0 (JSR-339). It is included in GlassFish open source application server and WebLogic application server from Oracle, and can be used with other web servers including the lightweight HTTP server included in JDK.