Clone of whatsapp.com

We want to create a site similar to that of WhatsApp service ( [login to view URL] ) . It should be able to work similarly the way whatsapp works with slight improvements and modifications and ofcourse a totally new and fresh look and feel. An additional feature we would like here is that it should be integrated with a .TEL Domain. I will explain and give details later. Obviously there will be a small and neat website just to educate users about the service and encourage them to use it, just the way whatsapp does. - We can provide with the creative / design part. - We already have a good domain registered. - We will also provide with the hosting and related service. Let us know if you have any further queries on it. Thanks & regards, Saurabh Dayal