Viber is a free, cross-platform messaging and voice-over-IP (VoIP) application. It allows users to send text messages, make voice and video calls, and share photos, videos, and other files with other Viber users, as well as with non-Viber users through a variety of integrations. It[SQ]s similar to apps like WhatsApp, Telegram, and Messenger. A key feature is the ability to make free calls over Wi-Fi or a mobile data connection, bypassing traditional phone charges.