A pre-release version for Android appeared in May 2011 but was restricted to 50,000 users; an unrestricted version was released on July 19, 2012. Viber for BlackBerry and Windows Phone devices was launched on May 8, 2012.
Viber Out was originally released in November only to help Typhoon Haiyan victims in the Philippines connect with their loved ones. To use the new feature, users have to visit the "More" tab and choose Viber Out. No update is needed for the feature
Viber for Desktop*
(Viber for Desktop can be installed only after the most recent version of the application has been installed on a mobile device)Windows: 7, 8, XP SP3, Vista, 10Mac: OSX 10.7 and aboveLinux: 64 bit, Ubuntu, Fedora *Minimum hardware requirements: CPU: Dual core processorMemory: 1GB RAM, 1MB disk spaceMicrophone and speakers for voice calls and webcam for video callsAD2P compatible Bluetooth receiver for BT devices