Cheapest Voip for Pakistan:

At this monent the Cheapest VoIP  for Pakistan: www.discountcalling.com/
Rate -0.02 USD/min to mobile and  land line, No connection fee. You can use it from computer as well as from your mobile. It does not have any free distination to Europe land line and United States.You can log in voipblazer ID in "Mobile voip"  and in "voipconnect" software.

If you need to call Europe Land line n USA then you can use http://www.voipstunt.com/Rate -0.05 Euro/min to mobile and  land line, No connection fee. You can use it from computer as well as from your mobile. It has free distination to Europe land line and United States and also have some other free distinations. You can log in voipstunt ID in "Mobile voip" and in "voipconnect" software.

You may also use - http://www.voipyo.com/ , Rate- .055 euro/min to mobile and .06 euro/min to land line, no connection fee. You can only use voipyo from your mobile, no software is available for computer. You must have to internet connection in your smart mobile. Voipyo provide software for Iphone, Anroid phone, Nokia/Symbian, Blackberry , Windows phone.