Webmin is a web-based interface for system administration on Unix-like servers. It allows users to manage various aspects of their server, such as user accounts, disk quotas, and services, through a simple web browser. This makes it easier for administrators to perform tasks without needing to use the command line. With Webmin, users can also install and manage additional modules to extend its functionality. It supports a wide range of server management tasks, including configuring databases, managing firewall settings, and monitoring system performance, making it a versatile tool for both novice and experienced system administrators.