Viber is a cross-platform instant messaging and voice-over IP (VoIP) application that allows users to make voice and video calls, send text messages, share photos and videos, and even play games with friends and family.

Viber was launched in 2010 and has since grown to become one of the most popular messaging and communication apps in the world, with over a billion registered users. The app is available for free on various platforms, including iOS, Android, and Windows, and can be used on both smartphones and desktops.

One of the key features of Viber is its end-to-end encryption, which ensures that all communication is secure and protected from third-party access. This makes it a popular choice for those who value privacy and security in their online communication.

Viber also offers a number of other features and tools, such as the ability to make group calls with up to 20 people, the option to make international calls at low rates, and the ability to share files, photos, and videos of any size. The app also includes a range of stickers, emoticons, and other fun elements that can be used to enhance your conversations.

Overall, Viber is a versatile and user-friendly app that provides a comprehensive messaging and communication solution for both personal and professional use.