One of its key features, I guess, is the ability to monitor your friends. The application will minimize to systemtray (if enabled) and popup a notify balloon (similar to mIRC's) whenever one of them connects to a server. There's also, optionally, a really cool method of browsing the servers by viewing thumbnails of the maps that are playing at the moment. Of course, you can also view them by details if you prefer, which is the default method of viewing. Besides all of that, it naturally features most of what other tools can do as well.
Here's a few screenshots of the app.



You can grab it here