Hello, Skype … and WhatsApp: Viber has 200M users and a new, spiffy desktop video-calling client

The result is a combination of just about every kind of communication you could wish for in a single client: mobile text-message-like messaging, audio, and video. Which means that not only is Viber competing with mobile messaging platforms like the massive WhatsApp, it’s also competing with existing VOIP giant Skype.