Viber for Windows 8 Specifications
Send free messages as well as make free calls to other Viber users, on any device and network, in any country.
We worked closely with Microsoft to provide the best possible Viber experience on Windows 8. Viber for Windows 8 and the latest versions of the Viber application for smartphones have been designed to allow you to use Viber on multiple devices, so you can always use the app that's right for you, whether at home, in school, at the office, or on the go.
On Viber, your phone number is your ID. The app syncs with your mobile contact list, automatically detecting which of your contacts have Viber.