40 things built for hackathons, coursework, curiosity, and production. Most link to source.
Distributed key-value store built from scratch on Raft: leader election, log replication, and snapshotting over a gRPC transport with durable bbolt storage. Kill the leader mid-write and a new one is elected in a few hundred milliseconds with no committed data lost. Passes the full suite under the Go race detector.
Go, Raft, gRPC, bbolt, Distributed Systems, Consensus
Price-time-priority limit order book and matching engine in C++20 with zero dependencies: limit and market orders, O(1) cancel and modify, self-trade prevention, and sanitizer-clean builds. Benchmarked at about 6.97 million orders per second with a 68 ns p50 engine latency on Apple Silicon.
C++20, CMake, Low Latency, Matching Engine, Property Testing
Backtesting engine for systematic trading strategies that mirrors a live system: a single FIFO event queue drives market, signal, order, and fill components, with transaction-cost and slippage modelling and walk-forward validation. Ships with momentum and pairs-trading strategies and a deterministic synthetic-data generator.
Python, NumPy, pandas, Quant Finance, Backtesting
Observability and auto-triage for AI agents. Instruments a real agent (Llama 3.2 on Ollama with live search and embedding retrieval) using OpenTelemetry GenAI semantic conventions, streams traces to self-hosted SigNoz, tracks token cost per model and user, and ships a Triage Copilot that reads the telemetry and explains what broke.
Python, OpenTelemetry, SigNoz, Ollama, LLM Agents, Observability
Ask your telemetry anything. Turns natural language, PromQL, or LogQL into SigNoz Query Builder specs with a live result panel, plus a gallery of one-click demos such as secret-leak detection, orphan-span checks, and top-N endpoints by p99. Built for the SigNoz hackathon.
Python, PromQL, LogQL, SigNoz, LLMs, Observability
Turns live SigNoz alert state into an ambient signal: a lamp that glows green, breathes amber, and flashes red as systems misbehave. Ships a virtual browser orb driven over server-sent events, with a device adapter so an ESP32 LED strip or a Hue bulb drops in with a one-line change.
Python, SigNoz, Server-Sent Events, IoT, Alerting
A narrative RPG where the townsfolk run on a typed knowledge graph. Every character remembers what you did, who told them, and how they feel about you, and that memory spreads as gossip across graph edges. Runs locally and mirrors every event to Cognee Cloud when a key is present.
Python, Knowledge Graph, Cognee, LLMs, Game
This site. A portfolio with a retrieval-augmented chatbot that answers questions from the resume and project notes: local MiniLM embeddings, BM25 with rank fusion and MMR, and Groq, Gemini, or ChatGPT behind one client with per-provider budgets and automatic fallback.
Next.js, TypeScript, RAG, Groq, Gemini, OpenAI, Tailwind CSS
High-performance Todo API optimized to serve ~500k req/s using Redis caching and asynchronous Kafka writes.
Go, Gin, Redis, PostgreSQL, Kafka, Docker, Kubernetes, Nginx
DApp for managing scholarships using smart contracts on the blockchain
Move, TypeScript, React, ChatBot, NodeJS, Smart Contracts, Blockchain, Aptos
B2B saas app for organizing and managing tickets within an organization
Bun, Hono, Elysia, Turso, CI/CD, Drizzle, UnoCSS, Docker, Render, SQLite, HTMX
A Splitwise clone that talks to the browser entirely over HTTP/3 + QUIC (UDP), paired with HTMX and SQLite — an experiment in modern low-latency web transport.
Go, HTTP/3, QUIC, WebTransport, HTMX, SQLite, UDP
AI-powered security automation platform. Integrates Nmap, Nikto, and SQLMap for multi-layer vulnerability detection (OWASP Top 10, SANS 25), analyses source code with Groq inside a no-code visual workflow builder, and scans GitHub repositories. Global top 11 at the Walmart Sparkathon.
React, TypeScript, Node.js, Django, PostgreSQL, MongoDB, Docker, Groq SDK, Security
Monitoring setup for a Node.js server using Grafana, Loki, and Prometheus in Docker.
Node.js, Express, Docker, Prometheus, Grafana, Loki
A complete DevSecOps pipeline deploying a Maven app to Kubernetes with GitHub Actions and Jenkins, security scanning via Trivy, and code quality gates through SonarQube.
Jenkins, GitHub Actions, Docker, Kubernetes, Trivy, SonarQube, Maven, DevSecOps
A JavaScript-based machine learning inference engine implementing a neural network to classify the Iris dataset, featuring both browser and Node.js execution.
JavaScript, stdlib, Machine Learning, Neural Network, Node.js, Webpack
An expense tracker build with hono and bun.
Hono, Bun, NeonDB, Drizzle, Docker, tanstack, Kinde-auth, hono-rpc
A GitHub App built with Probot that automates issue management workflows, streamlining assigning and labeling for maintainers.
Node.js, Probot, Docker, GitHub API, Automation
A robust and scalable Go backend for the Personalized-SmartEd platform, integrating RESTful APIs with an ML-Service for dynamic assessments and tailored tutoring.
Go, REST API, Machine Learning Integration, Microservices
Web app for selling and renting estates, build in MERN stack
React, MongoDB, Express, NodeJS, Redux, JWT, TailwindCSS
Platform build in spring boot and react for daily wage workers to register themselves
Spring Boot, React, MySQL, Docker, Railways
Deployed Python Flask App on Kubernetes cluster using a GitOps approach with ArgoCD and GitHub Actions.
Python, Flask, Kubernetes, GitOps, GitHub Actions, ArgoCD, Docker
An Open Source application for student community of IIITL for discussions, resources, question papers, and collaboration.
Next.js, Tailwind CSS, MongoDB, React
A complete video hosting website backend similar to YouTube featuring user authentication, video uploads, likes, comments, subscriptions, and tweet functionalities.
Node.js, Express.js, MongoDB, Mongoose, JWT, Bcrypt, Cloudinary
Backend service for managing restaurant operations, including menus, food items, orders, tables, and invoices.
Go, Gin, MongoDB, REST API, Backend
A robust web application serving as a comprehensive solution for managing school classes with role-based access for admins, teachers, and students.
React, Redux, Material-UI, MUI, Role-based Access
Intelligent floor plan management system for efficient room booking and space utilization.
Node.js, Express, MongoDB, React, Tailwind CSS, JWT
A fast-paced mini-game made in 3 days where players use arrow keys to defend their holiday presents from being stolen.
Python, Pygame
Hands-on technical deep dives that pair theory with runnable code and Mermaid diagrams, organised as a learning path from system-design fundamentals through networking, databases, security, and infrastructure to senior-level architecture judgement.
System Design, Documentation, Mermaid, Networking, Databases
Simplicity is prerequisite for reliability.