Google has finally rolled our free international voice calls via
GMail. The calls are free when made for Canada and the US while the
offering minimal fees to other countries.
You will need to download and install the voice and video chat software
here.
Rates for other countries vary from 2 cents per minute to 15 cents
per minute depending on the location and whether you’re call a landline
or a mobile phone. This service directly competes with Skype.