Every time I clone an unfamiliar open-source repository or onboard onto a new project, I find myself clicking through dozens of folders, hunting down route handlers, and mentally mapping how components connect.
I got tired of doing that manually, so I built RepoDNA — a free, open-source tool that turns a repository into an interactive structural architecture map in seconds.
Key capabilities
Zero runtime code execution: RepoDNA reads source code statically. It never runs npm install, pip install, repository code, or untrusted scripts. Local folders and .zip uploads are parsed inside your browser.
Route and dependency tracing: It follows supported HTTP handlers in Next.js App Router, Express, NestJS, and FastAPI through imports and calls toward database models such as Prisma, SQLAlchemy, and SQLModel.
