Personally, I don’t like using facebook inbuilt chat as it doesn’t offer features which are must needed and is soggy too. So, here is a good alternative to facebook chat.
Chit Chat for Facebook is a free instant messenger that allows you to chat with all your Facebook contacts right from your Windows desktop, eliminating the need of a web-browser to chat over Facebook.
The app has a simple and easy to use interface. One can chat with multiple friends over facebook, see full chat log, save the conversation as html file, clear chat history.
It also shows Instant Message Notification which lets you know when you receive an instant message, friends come online or go offline.
Try it now! Download Chit Chat for Facebook