Growl for Windows is a Windows-compatible version of Growl, a notification system for Mac OS X. Put simply, Growl lets you know when things happen. Files finished downloading, friends came online, new email has arrived - Growl can let you know when any event occurs with a subtle notification. The rest of the time, Growl stays out of your way.

Snarl is a notification system for Windows which lets you decide which notifications should appear - and how they appear. All of this is centralised into a single location - Snarl's preferences - so you know where to look each time, no matter which application it is. You can also assign different styles and schemes to each notification.