Skype members talk for free over the computer, and enjoy low-rate long-distance calls, to anyone, anywhere.
magicJack, small device that you can plug into your home computer and have home phone service that calls anywhere in the United States or Canada.
RingCentral has an impressive virtual office service for small businesses. Four plans to choose from offering long distance, toll-free phone numbers, fax email solutions and much more.
VoIP.com promises to have the lowest international calling rates and the largest features list for internet telephone service.