Mac users interested in Internetcalls voip app generally download:
Internetcalls -Free phone calls all around the world.
Make free calls to all your online friends and regular phones in various popular destinations, or call any other number at the lowest rates around.
Not only can you call your online friends for free, Internetcalls also offers free calls to any regular land-line in various popular destinations.
Additional suggestions for Internetcalls voip app by our robot: