SHOUTcast Management Interface (BETA) - Create and modify shoutcast servers with the ease of a web based interface. It is designed to run on PHP (5.0 or later) enabled web servers with MySQL (4.1 or later). SMI has been tested on Linux and Windows 32-bit platforms, but should be able to run on any POSIX/BSD system including Mac OS X. ...

phpSC, PHP based shoutcast control panel supporting HTTP Proxy, Multiple server configurations, and easy GUI modification of the shoutcast configuration file.