An IRC client is a software application that allows users to connect to the Internet Relay Chat network. It enables real-time text communication with multiple users in chat rooms, known as channels, or through private messages. Users can join various channels based on their interests and engage in discussions with others from around the world. These clients come in various forms, including desktop applications, web-based interfaces, and mobile apps. Popular IRC clients include mIRC, HexChat, and Irssi. Each client offers different features, such as customizable interfaces, file sharing, and support for multiple servers, enhancing the overall chat experience.