GoodBarber - GoodBarber is a mobile app creation platform.
letsBrik - A Skype Alternative that is entirely web browser based.
Dropsource - Mobile development platform for building native iOS & Android apps
Amivox - Would you like to make international calls either free or at local rates ?
Bizness Apps - Create your own app or become a reseller and build apps for others
KeepCalling - Best Rates for International Calls. No Contract, Expiry, or PIN. Use Any Phone, Smartphone or PC.