Skype

With Skype’s free software – by the way, it works seamlessly with your internet connection – you can chat away with free Skype-to-Skype calls and never worry about cost, time or distance. Share the love and get your friends to download Skype so you can talk, instant message (IM) or make video calls for nothing. You can also make calls to phones and mobiles at home and abroad at great rates too. [|Skype Website]