It seems that the old-fashioned "land lines" have long since gone by the wayside. With cell phones and video chat becoming more and more common. Sitll, there is still a need for that old fashioned phone call.  All you have to do is to download some software for free and have an internet connection and you are good to go. Here are some the best (free!) voice-over-IP tools on the market today. 

Google Voice

With Google Voice, you can do much more than make free calls. Google Voice helps you to manage all of your contacts and it helps to re-route the calls that you receive to your free number provided by Google Voice to any other phone that you have. If you want, you can also use the service for free text messages and voice mail. You can use Google Voice as web app which can be used in any browser including mobiles.

VoipBuster

VoipBuster is a lesser known program for free phone calls. It is available for free  for all the major smart phone OS's. Here the phone calls are limited per week instead of per call. And you're not limited by geography. Some of the popular destinations in the world which are included in this service are the US, Australia, Canada, most parts of Europe and Hong Kong.

iCall

Like the other programs, you can make calls from a personal computer to a phone using the iCall software for free. However, there is a catch, for the call to be free, the number that you call has to be a number in the US or Canada, but the computer from where you make your calls can be located anywhere in the world. Another catch: the free calls are limited to only five minutes, but you can call a phone number as many times you want. 

KNCTR

This is a web-based service. The sound quality is not that great but there is no limit to the duration of the call and the number of times you can call. 

It looks like for now, each method has its drawbacks. Then again, they're all free, so you can't really complain!