WeeChat is a free and open-source Internet Relay Chat client, which is designed to be light and fast. Developed by WeeChat.org
License: Open Source
X-Chat 2 is a user-friendly IRC client primarily for Windows that is great for beginners, but lacks customizability and advanced features. In contrast, WeeChat is a highly flexible and scriptable IRC client that appeals to advanced users, offering extensive customization and mobile support.