Skype is a voice calling , video calling and texting , images and files , all for free . of course there are some premium features such as calling phone numbers and group video chatting ,etc...
Skype was released in August 2003 , it was created by Dane Janus Friis and Swede Niklas Zennstorm in co-operation with Ahti Heinla, Priit Kasesalu, and Jaan Tallinn .
Skype works on these platforms : Microsoft Windows , Mac , Linux , Android OS , iOS , BlackBerry OS , Windows Phone Smartphones and Tablets , And some other platforms (such as : Samsung smart TV , PlayStation portable slim and lite series , etc... ).
we know that telecom companies in Belize, Brazil, Mexico, China, Columbia, Cuba, Panama, UAE and some other countries in middle East Asia and South America are doing this practice. Skype traffic is either slowed down via connection speed, or is completely blocked in those countries.