WeeChat is a lightweight and flexible chat client designed for various messaging protocols, including IRC (Internet Relay Chat). It is open-source and can be run on multiple platforms, such as Linux, macOS, and Windows. Users can customize their experience with scripts and plugins, making it suitable for both casual and advanced users. The client features a user-friendly interface that supports multiple buffers, allowing users to engage in several conversations simultaneously. WeeChat also offers features like notifications, logging, and a built-in scripting language, enhancing its functionality and making it a popular choice among chat enthusiasts.