Swagger is a Java-Swing based client for the Jabber Instant Messenger system. The backend of Swagger is implemented with the JabberBeans class library. Swagger was the prototype application used to determine the structure for SwaggerAPI, Weatherlight's Jabber API. Swagger is a solid, lightweight client providing the basic features expected from a Jabber client. Its rebranding license also makes it an excellent choice when considering Jabber clients for commercial purposes.