WhatsApp Messenger is a very powerful messaging application that helps people to send messages for free. This Application has a huge advantage over others in that is Cross Platform unlike iMessage on Apple’s iOS , Blackberry Messenger on Blackberry phones, Windows phones and other messaging Apps on Android. The developers describes WhatsApp as a:
WhatsApp Messenger is a cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS. WhatsApp Messenger is available for iPhone, BlackBerry, Android, Windows Phone and Nokia and yes, those phones can all message each other! Because WhatsApp Messenger uses the same internet data plan that you use for email and web browsing, there is no cost to message and stay in touch with your friends.In addition to basic messaging WhatsApp users can create groups, send each other unlimited images, video and audio media messages.
This App is highly recommended for people wants to communicate with friends and families abroad for free.