Web interface for Centrifuge >= 0.8.0 and Centrifugo. See its description in documentation.
You can serve this application using Nginx - see index.html in app folder.
Also Centrifuge and Centrifugo have command-line option --web to serve this web interface:
centrifuge --config=/path/to/config.json --web=/path/to/centrifugal/web/app/or
centrifugo --config=/path/to/config.json --web=/path/to/centrifugal/web/app/