I Built a Self-Hosted Uptime Monitor in 1 Week Because UptimeRobot Only Lets You Monitor One Site for Free

The Problem I was building my project and needed to monitor its uptime. I went to UptimeRobot — and hit a wall. The free plan only lets you monitor one website. I had multiple services running and didn't want to pay just to know if my own server was down. So I did what any developer does. I built it myself. What I Built Site-MOnitoring (Nexus) — a fully self-hosted, open-source uptime monitoring tool that: 📡 Monitors unlimited websites — add as many URLs as you want 📊 Shows real-time analytics — response times, status codes, uptime history 🎨 Interactive dashboard — built with React + Framer Motion 😴 Anti-sleep engine — keeps itself alive on free platforms like Render/Vercel 🏠 100% self-hosted — your data, your server, zero subscription fees Live demo: pingbot.yogender1.me GitHub: github.com/yogender-ai/Site-MOnitoring Tech Stack LayerTechnologyFrontendReact 18, Vite, TailwindCSS, Framer MotionBackendNode.js, Express.jsDatabasePostgreSQLJobsCron jobs (pinger.js)HostingRender (backend),