Viber, the Israeli mobile application that allows users to make phone calls and send text messages for free, is in talks with a potential Chinese buyer. Word on the street is that the deal could be worth around $300 million. The move happens six months after Viber approached investment banking firm Goldman Sachs to help it find a buyer. Viber has a large user base in Southeast Asia.

Viber was established in 2011 by entrepreneur and businessman Talmon Marco, with partners from the Israeli company iMesh, one of Israel's largest media and file-sharing companies. It recently launched new services to diversify its sources of income. Among those is Viber Out, which allows users to make international calls to non-Viber users at low rates.

Viber has about 200 million registered users in 193 countries. It launched an instant messaging app for personal computers that allows users to make outgoing mobile calls to other Viber users and to nonregistered mobiles, making it a rival to Skype.