Introduction

Skype is a software program created by the Swedish and Danish entrepreneurs Niklas Zennström and Janus Friis and a team of software developers: Ahti Heinla, Priit Kasesalu and Jaan Tallinn based in Tallinn, Estonia. Skype allows users to make telephone calls over the Internet to other Skype users free of charge and to landlines and cell phones for a fee. Additional features include instant messaging, file transfer, short message service, video conferencing and the ability to circumvent firewalls.

References

1. http://en.wikipedia.org/wiki/Skype
2. http://www.skype.com/