First of all you can consider the storychimes whatsapp ipad article. Whatsapp can help you talk with people and send all kinds of files. The second application is called Skype, and it is quite used across the globe as it allows for people to see each other. The application called Viber is also a very good one, and you just have to download it right away in order to make sure that you can use it more.
Just imagine you want to download a certain application that can help you communicate more with people around. In this way, you can choose the right application from the top most appreciated ones that are based on communication.