Image credit: Lifehacker
With OS X Mountain Lion, Apple introduced Notification Center to the Mac. This shows popups and lists notifications in one, easy-to-reach place. Growl isn’t yet available for Mountain Lion, but Mountain Growl does the next best thing. It pushes Growl notifications to your Mac’s Notification Center.
This is about all we have for now, and many applications still use Growl for such updates. It’s better than nothing, and will have to do until we get better Notification Center support or Growl for Mountain Lion.
You can check out Mountain Growl here.