ArmaBell is an Armagetron addon started by iF in 02/2006 and its only available for WinXP.
This little piece of software brings the currently online players and servers directly to your desktop.
ArmaBell is equipped with a programmable Eventeditor. You can program yourself with ArmaBell even eventscripts which to be implemented automatically. Armabell is equipped also with a simple plugin interface.
ArmaBell used to be available from http://armabell.armagetron.de/, but at least the domain went dead. Here's the .zip release hosted by VcL. You have to edit the shortcuts and correct the directories to make it working.