Both its interface and the way it runs are similar to those of Skype, an application that is already famous in the domain of internet conversations.
Woize allows you to call landlines and cellphones throughout the world, without monthly rates or membership fees. You can use your phone attached to your PC through an adapter, or an IP USB phone.
As is expected with applications of this type, it is essential to have a good Internet connection to ensure call quality. The Woize creators recommend a high-speed connection with at least 128 kbps.