Viber

Viber is a versatile communication app available on Mac, Windows, iOS, and Android. It allows you to make high-quality phone calls and send SMS messages completely free to other Viber users on popular smartphone operating systems. All you need is a WiFi or 3G internet connection, enabling you to connect with friends and family anywhere in the world without incurring traditional phone charges. It's a simple, cost-effective solution for staying in touch.