Viber is a well-known VoIP service provider and software doing mostly what other similar products do except for the fact that is free and brings a little bit of style in our lives thanks to a beautiful graphic user interface. Cross-platform and incredibly fast to install and use, this VoIP client recommends itself as one of the most used calling services in the world.

From free text messages and free calls to other users on the same network, to free messages and calls on any other network in the world, this seems to be the ultimate solution in terms of free communication. HD audio calls, video calls and sticker messages everything is now possible with a single number.