I have just made the first public release 0.1 of dgsmonX, a little project that I have been working on over the past 2 years. The project has its own web page where you will find more details if you are interested.
Here is the project summary:
dgsmonX is a faceless Mac OS X application (i.e. an application that is not visible in the Dock) that monitors the games you have joined on any number of Dragon Go Servers (DGS) and alerts you when it is your turn to move.