clang-uml for Windows

Quick summary

clang-uml is a free Windows utility that generates UML diagrams directly from C++ source code. It leverages the Clang front end and uses YAML files for configuration to produce up-to-date visualizations of code structure and interactions.

Generated diagram types

• Include diagrams (showing header and include relationships)
• Package diagrams (grouping and module-level relationships)
• Sequence diagrams (depicting runtime interactions)
• Class diagrams (displaying type members and relationships)

Notable capabilities

• Uses Clang to accurately parse modern C++ code, including recent language features.
• Configurable via YAML so you can tailor output and filtering to your project.
• Designed to keep diagrams synchronized with the codebase, reducing manual maintenance.

Integrations and output formats

• PlantUML compatibility for users who prefer that rendering ecosystem.
• Mermaid support for teams that want lightweight, web-friendly diagrams.

Who should consider it

• Developers maintaining or documenting legacy C++ projects.
• Teams that need automated diagram generation to help comprehension and onboarding.
• Anyone wanting a reproducible way to visualize complex class and dependency structures.

Getting started

• Install clang-uml on Windows and point it to your source tree.
• Create or adapt a YAML configuration to select files, filters, and diagram types.
• Export diagrams in the supported formats (PlantUML, Mermaid) and render with your preferred tool.

Alternative option

• SHAREit (free) — mentioned as an alternative in some listings; evaluate based on your workflow and platform needs.