Sentinel
Website Monitoring Built for Agencies
3 followers
Website Monitoring Built for Agencies
3 followers
Monitor your entire client portfolio — uptime, SSL, DNS — from one dashboard. Instant alerts via Slack, email, and SMS. Built for agencies and developers managing 5 to 300+ sites.
Hey Product Hunt 👋
I built Sentinel because I was tired of watching agencies lose credibility over bad uptime alerts.
After years of managing client sites, I realized the worst moments were never actual outages. They were false positives. A single region hiccups, DNS stalls, or Cloudflare blocks a bot… and suddenly a client thinks their site is unstable. That's not a technical problem. That's a trust problem.
So I built Sentinel to confirm incidents across multiple regions before any alert fires. It separates DNS failures from HTTP issues, detects partial outages, and focuses on reducing noise instead of increasing alerts.
I built the entire system myself, from the Laravel + Horizon queue architecture to the edge check nodes, with one goal: fewer false alarms, clearer signals, less panic.
Would love your feedback, especially from agency owners and teams managing multiple client sites. Happy to answer any technical questions about how it works under the hood.
I've been using Sentinel for over a month now to monitor our over 50 websites. It is by far the best monitor I've ever used. The region based monitoring give you a complete picture and can help troubleshoot issues with your CDN provider's systems. DNS and domain monitoring provide an extra level of protection again your clients loosing their domains or their DNS getting hijacked. It easily integrates with Slack. My favorite feature is the Mac menu bar app that keeps your monitors in front of you while allowing you to work on other stuff. If there's any issue you can open the site's monitor right from the widget, extremely useful! Another key feature is being to create a monitor page to share with your clients that will actually use it. I could not recommend this product more ⭐⭐⭐⭐⭐