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Kazaa to Skype Essay title: Kazaa to Skype From KaZaA to Skype By the year 2002, Niklas Zennstrom and Janus Friis not only invented KaZaA, but also entered the Internet telephony market known as Voice over Internet Protocol (VoIP) with their new service, Skype. Creators of KaZaA avoided the illegal trading issues that Napster had.