Viber

Viber is an instant messaging and Voice over IP (VoIP) app for smartphones developed by Viber Media. In addition to instant messaging, users can exchange images, video and audio media messages. The client software is available for Apple iOS, Android, BlackBerry OS, Nokia Series 40, Symbian, Bada, Windows Phone, Mac OS, and Microsoft Windows.[

Viber was founded by four Israeli partners: Talmon Marco, Igor Magazinnik, Sani Maroli and Ofer Smocha.

Viber includes text, picture and video messaging across all platforms, with voice calling available only to iPhone, Android and Microsoft's Windows Phone although HD voice is planned for Windows Phone 8.

On December 2013, Viber officially launched Viber Out, a feature that provides users the option to call mobile and landline numbers; thus Viber users can call people not using a Viber app. 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 Out calls to landlines and non-Viber mobile phones around the world are charged at varying rates per minute, requiring users to buy credit.

CompanyViber Media is a Las Vegas and Cyprus-registered company with its development centers in Belarus and Israel. The company was founded by Marco and Magazinnik, who are friends from the Israel Defense Forces. The company is run from Israel, with much of its development outsourced to Belarus in order to lower labor-costs