Skype is free from computer to computer, since it exclusively uses internet to communicate. To make or receive calls from the telephone network will cost some, since there is a cost to that network connection.
Vonage, exclusively makes calls over the public telephone network, although could have "Deals" for Vonage to Vonage calls.
Vonage also doesn't need the computer on to use, nor does it require a specific sort of computer or OS.
Magic Jack, worth a mention, is more like Vonage, but relies on your computer to be on and running to make or receive calls.
1 comment… read it below or add one
Skype is free from computer to computer, since it exclusively uses internet to communicate. To make or receive calls from the telephone network will cost some, since there is a cost to that network connection.
Vonage, exclusively makes calls over the public telephone network, although could have "Deals" for Vonage to Vonage calls.
Vonage also doesn't need the computer on to use, nor does it require a specific sort of computer or OS.
Magic Jack, worth a mention, is more like Vonage, but relies on your computer to be on and running to make or receive calls.