Zero-Cost Uptime Monitoring + Status Page on Cloudflare's Free Tier

Monitoring your websites shouldn't cost money or require a VPS. Most uptime tools need a server, a database, or a paid plan — even small hobby projects end up with a $5/mo bill just to check if a site is up.

MonitorFlare is a self-hosted uptime monitoring platform with a beautiful public status page that runs entirely on Cloudflare's free tier: Workers + D1 + Pages. No server, no VPS, no monthly costs — and it deploys in about 60 seconds with a one-click button.

It's an enhanced fork of Uptime-Monitor (MIT), with a Vue 3 frontend, PWA support, and i18n in 9 languages.

Why MonitorFlare

	MonitorFlare	Typical hosted monitor
Cost	$0/month (Cloudflare free tier)	$5–50/month
Deploy	One click, no CLI	Signup + config
Status page	Built-in, PWA, RSS/email subscribe	Often extra
Notifications	9 channels	1–3 channels

What it monitors

• HTTP/HTTPS — GET/POST/PUT/HEAD, custom headers, body, keyword validation
• DNS — A/AAAA/CNAME/MX/TXT/NS via DoH
• TCP ports — via the Workers TCP Socket API
• SSL certificate & domain expiry — via crt.sh + rdap.org
• Error-rate thresholds and consecutive-failure escalation

Notifications: 9 channels

DingTalk · WeCom (WeChat Work) · Feishu (Lark) · Telegram · Slack · Discord · ntfy · generic Webhook — plus email with 5 providers (Resend, SendGrid, Mailgun, Postmark, AWS SES).

Status page

• Tag groups, incident timeline, scheduled maintenance
• Email subscription for incident updates + RSS/Atom feed
• Custom branding, dark/light themes
• PWA — installable, offline-ready

Internationalization

9 languages: English · 简体中文 · 繁體中文 · 日本語 · 한국어 · Deutsch · Français · Italiano · Español. Configurable timezone for all timestamps and alerts.

One-click deploy

1. Click the Deploy button above
2. Sign in to Cloudflare
3. Set ADMIN_API_KEY (your admin password)
4. Done — the D1 schema auto-creates on first visit

Or use GitHub Actions CI/CD, or manual wrangler deploy — all documented in the README.

Live demo

• Status page: https://monitorflare.csr.plus
• Public API: GET /api/status returns JSON for integrations
• Feed: GET /feed.xml

Open source

MIT licensed, fully self-hosted, no telemetry. Fork it, deploy it, own your monitoring.

⭐ Star MonitorFlare on GitHub

Disclosure: I built MonitorFlare.