http://www.skype.com/
program that allows you to make free telephone calls over the Internet with other Skype users, regardless of their location in the world. This program operates using peer-to-peer networking and in a similar fashion to many instant messengers, allows you to see if your contacts are online or otherwise unavailable.
program that allows you to make free telephone calls over the Internet with other Skype users, regardless of their location in the world. This program operates using peer-to-peer networking and in a similar fashion to many instant messengers, allows you to see if your contacts are online or otherwise unavailable.