Whatsapp has introduced the web version which is available at web.whatsapp.com. You can now easily chat using your computer to all your whatsapp friends using your keyboard and mouse. Here is a simple tutorial, how to connect whatsapp to your computer using whatsapp web messenger.
Read more: http://www.dailytut.com/apple/whatsapp-web-chat-client-released-limits-no-iphone-support.html