toovoip - no roaming
toolani
toolani - International Calls
MobileVOIP international calls
Finarea
Yolla: International Calling
Yolla Calls International
Rebtel: Calls and Recharges
Rebtel
KeepCalling International
Miron Enterprises, LLC
Talk360: International Calls
Talk360 Group B.V.
Phone by Google
Google LLC
mytello - cheap calls
mytello.com
Talk Home: Int'l Calling App
Nowtel International Calling