July 20, 2011
Viber, a mobile application that offers users free phone calls and text messaging to other Viber users over 3G and Wi-Fi, announced the official launch of the Android version of the app, bringing Viber to millions of additional users. Viber also announced that it has acquired over 12 million active users (last 30 days) and has an impressive call traffic volume of over one billion minutes of calls per quarter.
June 28, 2011
fring, the mobile communication service that pioneered mobile video over internet calls across smartphone platforms, now brings the world’s first dedicated group video chat service to the iPad.
January 20, 2011
IPsmarx announced the release of Breeze, their new line of VoIP Mobile Dialers that can be used with smartphones, such as the iPhone, Windows Mobile, and Android devices.
October 18, 2010
Pinger, a startup based in San Jose, California, aims to challenge Skype (and others) by offering free voice calls. They are doing so by piggybacking voip on their hugely popular TextFree application, which allows sending free text SMS messages. Pinger is currently serving 1.2 billion ads and sent 4 billion messages each month and is only expected to raise its numbers.
October 5, 2010
Two weeks after releasing fringOut that enables users to make cheap calls to any regular landline or mobile phone anywhere in the world, with rates as low as 1¢ a minute, fring announced the service is now available for Android phones. 
