It’s hard to imagine a person who hasn’t heard about Skype. In the modern age of information technology, the concept of distance between people has already become somewhat blurred, because to communicate with each other no personal meetings, postal correspondence, etc. are necessary, simply call. The creation of Estonian developers made a revolutionary breakthrough in this area, because not only were we given the opportunity to make free calls to anywhere in the world via the Internet, but we can also see each other through a webcam.