No matter what phone you have and whether you have a data plan or not, Skype now lets you make international calls with just a few clicks and from any phone (after a quick setup).
For a lot of us, Skype is one of the most important applications on our computers. The early betas of Skype for Mac 5, though, were rough, as they introduced the same single-window interface that Skype for Windows users have had to live with for a while now. Many of the user interface choices the Skype for Mac team decided on also made the app much harder to use.