Call your friends for free. A PC, a mic, speakers and an Internet connection are enough. You’ll be able to talk to your friends using these programs. Just like the messenger, these programs allow you to communicate with your contact list but instead of doing it through a text, you’ll do it by talking. You’ll even be able to call landlines and mobiles with reduced price rates. They allow the creation of rooms and they join several people into conferences. These programs are slowly becoming essential on any computer.