Google Voice is the service offered by Google.
It is best way to make free calls form PC to mobile and Mobile to PC.
But you can use Google voice to make free calls for only US and Canada.If you want to make free calls form any part of world then you will be charged
Yahoo messenger help you to make free calls from pc to phone.this is just awesome unlike google voice it works in India also.!!
If you have an Yahoo account then fine log in wth that .in case if you dont have a an Yahoo account then sign up for that and then login with your account
Step 1 Click on Yahoo Call and then select Call a Phone number from my PC just like above screen capture.
Step 2 Now Dail 18003733411 it is a toll free number and wait till your call is connected.
Step 3 Just follow the instructions and select the free call option end by sayng free call through your microphone.
Step 4 Almost done! Now you will here advertisement till your call is connected and then you can here Please Dail Your Number.
Step 5 Now Dail Your Number and start enjoying Free calls.
Icall is one of best applications to make free calls form PC to mobile.just like Google Voice it also offers only free calls for the number in USA and Canada.
Apps available for windows,Mac,Android,Iphone and Linux.
You can call for 5 minutes only after that your call diconnects but you can make call as many times as you want.