After months of fielding complaints for removing the service, Google is once again allowing Gmail users to make free telephone calls directly from their inbox, all without any kind of service contract ...

Imagine that you have a Wi-Fi tablet that doesn’t support SIM cards, but you still want to make phone calls. Buying a new device just to say ‘hi’ to your grandmother doesn’t really seem like an ...

Nimbuzz offers mobile apps that let you chat with or make free calls to other Nimbuzz users, or cheap calls to phone numbers. The iPhone app supports video calls, while you can also make voice-only ...