Clang-uml is a free utility tool for Windows that automatically generates UML diagrams from C++ code. Utilizing Clang and driven by YAML configuration files, it creates class, sequence, package, and include diagrams. This tool is particularly useful for maintaining up-to-date diagrams in a codebase, making it easier to visualize complex structures and relationships within the code.

The primary focus of clang-uml is on enhancing code documentation and aiding developers in understanding legacy code. It supports modern C++ standards and integrates well with popular diagramming tools like Mermaid and PlantUML. Overall, clang-uml serves as a valuable resource for developers looking to streamline their UML diagram generation process.