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1. backend-engineering-foundations backend-engineering-foundations Public

   Backend Engineering, Low-Level Design, System Design, Networking, Security, SQL, and Distributed Systems explained through visual diagrams.

   JavaScript 113 10

2. docify docify Public

   A multimodal RAG application for document Q&A using hybrid retrieval, reranking, and LLM-powered responses with source citations.

   Python

3. os_dbms os_dbms Public

   A visual-first repository for learning Operating Systems and Database Management Systems through structured diagrams.

   37

4. ExpenseSync ExpenseSync Public

   A full-stack expense management app for shared group spending with automated settlements.

   TypeScript 3

5. networks-foundation networks-foundation Public

   Visual Computer Networks notes with diagrams for learning, revision, and interview preparation.

   28 2

6. hi-secure hi-secure Public

   HiSecure unifies authentication, validation, sanitization, rate-limiting, headers and parsing into a single, consistent security layer for Express applications.

   TypeScript 3