Displays alerts when buddies on buddy list in iChat become online, away, idle.
growliChat displays alerts when buddies on buddy list in iChat become online, away, idle, or offline;turns on and off notifications as you wish from growl prefpane; shows a display picture in the notification; shows away messages when accounts change to away
distinguishes between jabber account and jabber transport so it displays the right name
windowless and dockless with preference pane; best of all, it's free you can make a donation if you wish.