Send free messages as well as make free calls to other Viber users, on any device and network.
With audio and video calls and more features than most messaging services, Viber is the best option, but only if you can convince your friends to use it.
Google Now recently added support for a handful of popular third-party messaging apps. Here's how to use them while hands-free.
Whether you're more the practical type that just wants standard messaging features or someone who loves spicing up your conversations with something extra, this collection has the app for you.
Viber's intuitive interface makes it easy to navigate, letting you start a message or call quickly.
Using the regular phone interface, T-Mobile subscribers can make and receive video calls from Samsung's new Galaxy S6 Edge+ and Galaxy Note 5.
The feature is part of the Viber 5.0 release, which also includes a refreshed design on Android and a new photo-forwarding feature on iOS.
The messaging app, which has added 100 million new users in the past four months, has experienced 50 percent growth in the past year.
The popular voice calling and messaging app has a new look and improved features that should make it more appealing to iPhone, iPad and Android users.
The Android version of the messaging app no longer sends images and videos without encryption protection, and an iOS fix has been submitted, the company says.
Researchers demonstrate that a widely used mobile chat app not only sends some kinds of data in the open, it also stores it publicly online.