Build Arena

Build the classic guessing game with a clean CLI loop.

Build a working calculator interface in the browser.

Build a clean, responsive landing page from scratch.

Build a command-line to-do list with persistence.

Build an interactive multiple-choice quiz in the browser.

Write a program that resolves hostnames to IP addresses using iterative DNS queries, without calling a resolver library.

Build a browser expense tracker with local persistence.

Build a component-based todo app with React.

Build a CLI tool that reads a device inventory, runs show commands over SSH, and reports configuration drift.

Build a NOC-style dashboard that shows alarms, KPIs and traffic trends from an API, with severity filtering.

Implement a minimal HTTP/1.1 server from raw sockets that serves files from a directory.

Build a content blog with Django's MTV stack.

Build an event booking system — the classic transfer partner of the e-commerce build.

Build a tool that reads a packet capture file and reconstructs TCP flows with handshake and retransmission analysis.

Build a 5G core monitoring dashboard: NF health, registration KPIs, PDU session success rate and slice utilisation from a REST API.

Build a complete authentication flow with sessions and security basics.

Build a dashboard that fetches data and visualizes it.

Build a store with products, a session cart and checkout.

Build a full-stack app: Django API serving a React front end.

Design and implement a RESTful API for a small resource.

Build an application around an LLM or AI service.

Build a production-shaped multi-user SaaS product end to end.