Skype is free and simple software that enables you to make free calls anywhere in the world in minutes. Created by the people who brought you KaZaA, Skype uses innovative P2P (peer-to-peer) technology to connect you with other users. It is quick and easy to install and now, with Skype conference calling, you can now talk with up to 5 friends at one time. Skype calls have better sound quality than your regular phone and are highly secure with end-to-end encryption. PDA version also available.