Viber Windows 5.9.1
Free phone calls via VoIP, chat and messages to your friends! ... install it you can immediately begin calling at zero cost (via VoIP) all your friends who use the app for smartphones Not only that, but ...
- PROS: Free calls via VoIP to friends, Great call quality, Supports video calls, Notificatios in system tray, Contacts and messages sync between devices
- CONS: Few advanced features, App required for PC client to work