Now, Growl is also available for Windows and it comes pretending to become one of the main alternatives to the default notifier offered by Windows.
It is totally customizable. It offers different themes, dispositions of buttons, sizes and color combinations, as well as shape and color of the notifications to make them look even better and more attractive.
It includes an application manager, network notifications, password protection, notification history, sound notifications and sleep mode.
If you want your PC to be a bit more different from the rest and too be one step nearer to Apple look, Growl for Windows can be a good choice.