growl

Notification system for OS X apps.

Plugin for Gmail Notifier.

Growl notifications for iCal, iTunes, RSS, weather, and more.

Queue-based music player with Spotify, Last.fm and Growl support.

Menubar item provides Growl notifications of Facebook events.

Menubar email notifier with Growl support.

Displays RSS/Atom feeds in the menubar and sends updates to Growl.

Notification for hardware status changes.