Skype
Skype ( /skaɪp/) is a software program that uses the Internet to make telephone calls (using a technology called Voice over Internet Protocol (VoIP). It was created in 2003 by the Swedish and Danish Niklas Zennström and Janus Friis. A company currently owns it in Luxembourg called Skype Technologies S.A.R.L, which since 2011 has been part of Microsoft. (From 2005 to 2011, Skype was owned by eBay.)