Unix-like Operating Systems are operating systems that behave in a manner similar to the original Unix system. They share common features such as a hierarchical file system, multi-user capabilities, and a command-line interface. Examples include Linux, FreeBSD, and macOS. These systems are known for their stability, security, and flexibility, making them popular for servers and development environments. Many Unix-like systems are open-source, allowing users to view, modify, and distribute the source code. This fosters a collaborative community that contributes to their development and improvement. Additionally, they often support a wide range of software applications and programming languages, enhancing their usability for various tasks.