Growl

Growl is a notification service that works with tons of social networking sites. Growl allows users to get notified when a new IM, Tweet, Email, or even find out what son just came on in iTunes. Some applications Growl works with are; Firefox, Adium, aMSN, Colloquy, Conversation, Skype, Yahoo! Messenger, eBay Watcher, MiniBatterStatus, Gmail + Growl, Thunderbird, YMail, Cyberduck, Transmition, Leech, Second Life Notifier, WoW Status, Xbox Live Friends, Hijack iT!, GarageSale, RSS Menu, NewsLife, Feeder, Tweetie, and Twitterrific, just to name a few! Growl has a veriety of sounds and styles to choose from.

Growl offers you complete control over which notifications are shown and how they are displayed. You will not receive any notifications that you do not want, because you can easily turn notifications (specific ones or all of them) off. When you start up a Growl-enabled application, it will "just work." Your apps can start displaying notifications right away.

Growl is a free application and is useful for just about anyone who uses Twitter, Instant Messaging, or almost anything that utilizes the web. Growl gets an overall 4 from me because although you are able to download more themes from their website, there still aren't that many to choose from. Also, the coice of notification sounds isn't the best either.

Growl can be downloaded here.

Their about page is here.

Also, I'm on twitter and am currently running a GIVEAWAY! More info here.