Good news to all Windows Phone and BlackBerry users, the highly popular app Viber is now available for your devices!
With over 70 million users, Viber is a very compelling application that let's you call and text other users on the network for free! What's really good about Viber is that there's no need to register, just give them your phone number and they will take care of the rest. The app will securely access your contacts list to show you which of them are on Viber.
The apps are now available for Windows Phone and BlackBerry in beta form, which doesn't include the calling feature yet. Head on to the Windows Phone Marketplace or App World to get it now.