Skype - Free Internet telephony that just works

Skype - Free Internet telephony that just works: "Skype is free Internet telephony
that just works.
Skype is for calling other people on their computers or phones. Download Skype and start calling for free all over the world."

Call ordinary phones from
Skype with SkypeOut.
Top up on SkypeOut credit and use the Skype programme to call ordinary phones all over the world. Not free, but pretty cheap.