
I am going to sharing some very useful applications to make free voip calls .
Fring
Fring is a VOIP application interesting , which can also be used on iPhone . This is the fact that it let you free calls with other Fring users . Also you can make free calls and instant messaging with Gtalk and Msn messenger contacts . Price later , it is much more affordable when it comes to local lines , international and cellular networks . Also you make free video calls and live chat with the other fring user .
Vopium
Vopium is a free iPhone application has the advantage of offering 30 minutes of free calls