jGrowl – jQuery plug-in to create pop-up notifications like OS X’s Growl Framework
jGrowl – jQuery plug-in is developed by stanlemon.net jGrowl is a jQuery plug-in to create unobtrusive pop-up notifications within the browser, similar to the OS X’s Growl Framework . jGrowl is free and open source jQuery plug-in which distributed under the MIT and GPL licenses.
Growl Notifications is notification system for your applications to provide you with new information, without you having to switch from the application you’re already in.
if you an iGoogle user , Betwittered a twitter client for your favorite search engine start page uses jGrowl jQuery plug-in.
Some Stylish pop-up notifications :