Asking the question in another way, is there any working web apps made for educational purposes only, where they have most common features(ORM, Caching, Error Handling, Form Validation, Redirection, Routing, Streaming, Middlewares, Sessions, Logging, Uploading, APIs, Authentication, Authorization, Rate limiting, Versioning, Testing, Mailing, ...) implemented

Edit: Something like this https://github.com/shadcn/taxonomy where the author tries to implement as much of a framework's features as possible. is there a directory where can I find repos like this?