Sitewatch

Sitewatch monitors websites by loading pages as a browser would, then checking each asset for failures that simple uptime pings cannot see. It detects broken pages, JavaScript errors, redirect loops, MIME mismatches, mixed‑content issues, and missing security headers, even when the server still returns a 200 OK response. The service produces a plain‑English root‑cause summary within about a minute and offers stack‑specific remediation steps for platforms such as Vercel, WordPress, Cloudflare, and Next.js.

The tool is aimed at agencies, freelancers, and development teams that need to catch client‑facing problems before they are reported. It runs automated checks after each deployment, monitors external APIs used by the frontend, and can trigger alerts only when an actual breakage is identified, reducing noise from false positives. Sitewatch can be used alongside existing uptime monitors to fill gaps in visibility.

A free tier is available without a credit card, and the system works with any technology stack. It provides quick diagnostics, fingerprint deduplication, and optional integration with communication channels like Slack for incident reporting.