Skype is an application that specializes in providing video chat and voice calls. Users can also exchange text and video messages, files and images, as well as create conference calls. Skype is available on Microsoft Windows, Mac, or Linux, as well as Android, Blackberry, iOS, and Windows Phone smartphones and tablets. Skype is based on a freemium model. Much of the service is free, but users require Skype Credit or a subscription to call landline or mobile numbers. As of February there were 34 million concurrently online on Skype; at the end of, there were over 660 million worldwide users with an average of over 100 million active each month.
First released in August Skype was created by Dane Janus Friis and Swede Niklas Zennström in cooperation with Estonians Ahti Heinla, Priit Kasesalu, and Jaan Tallinn, who developed the backend, which was also used in music-sharing application Kazaa.In September 2005, eBay acquired Skype for $2.6 billion.In September 2105.
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