ReqRes

ReqRes is a sandboxed coding platform for backend developers who are tired of reversing linked lists. Instead, you write real Express.js code — JWT middleware, CRUD APIs, CORS configs, etc and it gets executed in an isolated Docker container, tested automatically, and scored in real-time via Server-Sent Events. Built with Next.js 16, Express 5 on Bun, PostgreSQL, BullMQ, and Redis. Features XP, streaks, a leaderboard, and a GitHub-style activity grid.