Skype video
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Screenshot of Skype 11 for Windows desktop on Windows 10 in light mode
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| Original author(s) | Priit Kasesalu and Jaan Tallinn | ||||||||||||||
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| Developer(s) | Skype Technologies | ||||||||||||||
| Initial release | 29 August 2003 | ||||||||||||||
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| Development status | Active | ||||||||||||||
| Operating system | Windows, macOS, Linux, Android, BlackBerry OS, iOS, watchOS, Windows Phone, HoloLens, Xbox One | ||||||||||||||
| Available in | 108 languages | ||||||||||||||
| Type | Videoconferencing, VoIP and Instant messaging | ||||||||||||||
| License | Freemium (Adware on some platforms) | ||||||||||||||
| Alexa rank |  187 (November 2016[update]) |
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| Website | www |
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| Windows, UWP | 11.18.614.0 / 21 June 2017 |
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| Windows, desktop | 7.38 / 28 June 2017 |
| macOS | 7.56 / 28 June 2017 |
| Linux | 5.0.0.0 / 1 March 2017 |
| Android | 7.27.0.295 / 26 June 2016 |
| iOS & watchOS | 8.1.2 / 29 June 2017 |
| BlackBerry 10 | 6.1.0.16424 / 14 September 2015 |
Skype (/ˈskaɪp/) is an instant messaging app that provides online text message and video chat services. Users may transmit both text and video messages and may exchange digital documents such as images, text, and video. Skype allows video conference calls.
Skype implements a freemium model. Much of the service is free, but Skype Credit or a subscription is required to call a landline or a mobile phone number. At the end of 2010, there were over 660 million worldwide users, with over 300 million estimated active each month as of August 2015. At one point in February 2012, there were thirty four million users concurrently online on Skype.
First released in August 2003, Skype was created by the Swede Niklas Zennström and the Dane Janus Friis, in cooperation with Ahti Heinla, Priit Kasesalu, and Jaan Tallinn, Estonians who developed the backend that was also used in the music-sharing application Kazaa. In September 2005, eBay acquired Skype for $2.6 billion.
In September 2009,Silver Lake, Andreessen Horowitz and the Canada Pension Plan Investment Board announced the acquisition of 65% of Skype for $1.9 billion from eBay, which attributed to the enterprise a market value of $2.92 billion. Microsoft bought Skype in May 2011 for $8.5 billion. Skype division headquarters are in Luxembourg but most of the development team and 44% of all the division's employees are still situated in Tallinn and Tartu, Estonia.
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