If you are using multiple Web browsers (e.g. Opera is fast, but some important websites only support IE), then this small GUI tool helps you in opening links (e.g. the ones that you click in an Instant Messenger) in the browser you like.
This tool runs as a window service to start and stop rails server on a path and port specified in the .config "C:|Program Files|MA|Rails App Launcher" file on the windows OS.