Viber is a proprietary cross platform instant messaging voice over Internet protocol application for smartphones developed by Viber Media. In addition to text messaging, users can exchange images, videos and audio media messages. It was founded and co owned by four Israeli partners: Talmon Marco, Igor Megzinik, Sani Maroli and Ofer Smocha. Talmon Marco serves as its CEO. On 14 February 2014, the startup was acquired by Japanese Rakuten for $900 million. This app contains viber video tutorials.