Skype 5.7 beta

Skype is a software application that allows users to make voice and video calls and chat over the Internet.
Calls to other users within the Skype service are free, while calls to both traditional landline telephones and mobile phones can be made for a fee using a debit-based user account system.
Skype has also become popular for its additional features which include instant messaging, file transfer, and videoconferencing.