Probably the only feature that could make Growl even more awesome is if it were to support forwarding notifications to an iPhone or iPod Touch running 3.0 via the new Push framework. Growl includes support for hundreds of OS X applications and is one of the first items I install on a new system. Growl is very flexible it allows you to choose exactly which events trigger a notice, or pick a particular notification style for a specific event. The notification itself is a customizable pop-up that can also include an auditory notification as well.
For instance, a Growl notification might appear to inform you of a newly-arrived email, new mentions on Twitter, a change of song in iTunes, or a download completing in Safari or Transmission.
If you've seen a string of notifications pop up on your screen and then gracefully fade away, you've probably seen Growl it's the open source & popular system-wide framework that allows applications to let you know when something happens.
