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Skype facts for kids

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Quick facts for kids
Logo of Skype (2019–present)
Screenshot of Skype version 8 ( for Windows desktop on Windows 10 in dark mode (note: contacts censored)
Original author(s) Priit Kasesalu and Jaan Tallinn
Developer(s) Skype Technologies
Initial release 29 August 2003; 20 years ago (2003-08-29)
Operating system Windows, macOS, Linux, Android, iOS, Windows Phone, HoloLens, Xbox One
Available in 108 languages
Type Videoconferencing, VoIP, and Instant messaging
License Freemium

Skype is a software program that uses the internet to make telephone calls. The software was created by the Swedish and Danish Niklas Zennström and Janus Friis. It is for Microsoft Windows (2000, XP, Vista and Windows Mobile), Mac OS X and Linux. By using VoIP to make the calls, it is very cheap to call another phone. It does not cost money to call another Skype user. Every Skype user has a unique username which other users can use to talk with them. Skype also has additional features such as video calls and multiple members in a conversation. In the chat you can also find a selection with a variety of emojis available.

History of Skype

  • September 2002: investment from Draper Investment Company.
  • April 2003: and domain names registered.
  • August 2003: First public beta version released.
  • September 2005: Skype for talking is banned in South China.
  • October 2005: eBay bought Skype,(Oct 14
  • December 2005: videotelephony introduced
  • April 2006: 100 million users.
  • October 2006: Skype 2.0 for Mac is released, the first full release of Skype with video for Macintosh.
  • December 2006: Skype announces a new pricing structure as of January 18, 2007, with connection fees for all SkypeOut calls* March 2007: Skype 3.1 is released, adding some new features, including Skype Find and Skype Prime. Skype also released a 3.2 beta with a new feature called Send Money which allows users to send money via PayPal from one Skype user to another.
  • August 2007: Skype 3.5 for Windows released with additions such as inclusion of video content in chat, call transfer to another person or a group,
  • August 15, 2007: Skype (beta) for Mac OS X released adding availability of contacts in the Mac Address Book to the Skype contact list, auto redial, contact groups, public chat creation, and an in-window volume slider to the call window.
  • August 16 / August 17, 2007: Skype users unable to connect to full Skype network in many countries
  • November 2007: Skype users in London who use the 020 city code lost the phone numbers that connected to their Skype accounts after December 2007.


Skype has an encryption system for security. This system cannot be turned on or off. Skype provides an uncontrolled registration system for users. People can use the system safely without revealing their real-life identity to other users of the system, but there is no way to know that the person they communicate with is the one they say they are.


  • Skype clients can become supernodes. These supernodes hold together the peer-to-peer network. It can use a big quantity of bandwidth. For this reason, some universities have banned the use of Skype.
  • Significant use of obfuscated code
  • Keeps chatting on the network
  • Blind trust in anything else speaking Skype
  • Ability to build a parallel Skype network
  • Lack of privacy (Skype has the keys to decrypt calls or sessions)
  • Heap overflow in Skype
  • Skype makes it hard to enforce a (corporate) security policy
  • "No way to know if there is/will be a backdoor"
  • Users of Skype on Mac OS X have poor audio quality when connecting to Mac/Mobile clients
  • Bugs and delays in the Linux version

Images for kids

See also

Kids robot.svg In Spanish: Skype para niños

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