CodeBoarding

Interactive Diagrams for Codebases

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August 2, 2025 CodeBoarding

πŸš€ Built an open-source tool that turns codebases into interactive diagrams

When I was starting programming, I used to sketch diagrams to understand unfamiliar codebases. Even now, I still find visuals the fastest way to grasp a repo’s structure.

So I built CodeBoarding - a free, open-source tool that analyzes large codebases and turns them into interactive, high-level diagrams. It's designed for onboarding, documentation, and understanding systems.

You can run it on your repo and get:

- A conceptual breakdown of modules and relationships

- Multi-level abstraction using LLMs

- Mermaid.js diagrams you can embed in docs or IDEs

🎯 Use cases: onboarding devs, exploring open source, CI/CD checks.

Demo: https://www.codeboarding.org/demo

Source code: https://github.com/CodeBoarding/CodeBoarding

Would love your feedback. What languages or features should I support next?

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Helping developers and agents understand code.