How to Install Viber on CentOS GNU+Linux Distro
GNU/Linux CentOS Installing Viber Guide
You are Welcome! The linked Tutorials Show You Step-by-Step How to Install Viber in CentOS GNU/Linux Desktops.
And Viber for CentOS lets you Send Free Messages and make Free Calls to other Viber Users on any Device and Network, in any Country!
Furthermore, Viber Syncs your Contacts and Messages with your Mobile Device.