About Backend Repo Structure Explorer
The Backend Repo Structure Explorer provides ready-to-browse, collapsible directory trees for 55+ backend frameworks spanning 12 programming languages — from Node.js and Python to Go, Rust, Java, PHP, Ruby, Elixir, C#, Scala, Kotlin, and Haskell. Each tree reflects the canonical project layout recommended by the framework's official documentation or widely adopted community conventions, so you can see at a glance how a production-grade codebase should be organized.
No files leave your browser and no login is required — the trees are pre-built reference structures that you can explore interactively. This is especially useful when onboarding to an unfamiliar framework or when scaffolding a new project and wanting to align with established conventions from day one.
Common Use Cases
- Learning where to place controllers, models, and middleware in a new framework like FastAPI, NestJS, or Phoenix before writing any code
- Comparing how different frameworks (e.g., Express vs Fastify, Django vs Flask) structure the same type of project to choose the best fit
- Quickly scaffolding a mental map of a new colleague's codebase when it uses an unfamiliar framework
- Reviewing standard monorepo and microservice directory layouts for Go (Gin, Fiber) and Java (Spring Boot, Micronaut) before an architecture discussion
How to Use
- Select a language from the left sidebar — available languages include JavaScript, Python, Go, Rust, Java, Ruby, PHP, Elixir, C#, Scala, Kotlin, and Haskell
- Browse the framework cards that appear and click any framework to open its interactive directory tree in the main panel
- Click folder nodes to expand or collapse them and explore the recommended sub-directory structure
- Use the tree as a reference while setting up your project, or copy specific path patterns for documentation or team wikis
Frequently Asked Questions
Are these directory structures official or community-generated?
Each tree is based on the official documentation, starter templates, or the most widely adopted community conventions for that framework. For example, the Express tree follows the standard MVC layout seen in the Express Generator scaffold, while the Django tree mirrors the layout produced by django-admin startproject. They are curated reference structures, not arbitrary inventions.
Which frameworks are included for JavaScript/Node.js?
The JavaScript section covers Express, Fastify, NestJS, Koa, Hapi, AdonisJS, Feathers, Sails, Loopback, and Moleculer, among others. Both REST and GraphQL-oriented layouts are represented where applicable.
Can I suggest a missing framework?
Yes — use the "Request a Tool" option from the Convsta homepage to suggest a framework or language you'd like to see added. The tool is actively maintained and new frameworks are added based on community requests and usage patterns.