Restlet Studio (http://studio.restlet.com/) let's you visually craft your REST API and then view it as Swagger 2.0 or RAML 0.8 source code by simply switching tabs.
It is entirely free and available as a simple web app and installable as a Chrome app. Disclaimer: I work at Restlet.
It is entirely free and available as a simple web app and installable as a Chrome app. Disclaimer: I work at Restlet.