A chat client is a software application that allows users to communicate with each other in real-time through text, voice, or video. These clients can be standalone applications or integrated into websites and mobile apps. Popular examples include WhatsApp, Slack, and Discord. They often support features like group chats, file sharing, and emojis to enhance communication. Chat clients connect to a server that manages the messages and user presence. Users typically create accounts to access these services, which may also offer privacy settings and notifications. Many chat clients are available on multiple platforms, ensuring users can stay connected from various devices.