An extensible program for monitoring various activities and events that can occur on your system.
Features
Extensible via plugins to add more 'monitors'
Per-plugin preferences view
Each plugin provides list of notification that can be controlled in Growl preference pane
Initial Plugins
Bonjour — service available/unavailable notification
Volumes — Volume mount/unmount notification
Network — Notifies of IP and Airport changes
Power — Notification of power changes (battery to AC etc.)