WhatsApp is the cross platform mobile messaging app. This allows you to send free messages to your buddies over wifi without being charged for text messages. The app will allow you to send messages on Android, iOS, BlackBerry, Windows Phone, and Nokia. You can now have chat-heads style notifications for Whatsapp. Seebye Chat Heads allows you to access your notifications from whatsapp on any screen on your Android without having to pull down your notification drawer. Head to the Play Link below for the download.
Via Play Store