Sentinel
Website monitoring that sees what others miss.
Sentinel is a website and infrastructure monitoring tool that checks sites from four global regions. It monitors uptime, SSL certificates, DNS records, domain expiry, keywords, JSON/API responses, ICMP ping, TCP ports, and heartbeat/cron jobs. It is designed for agencies and freelancers who manage multiple client sites, offering branded status pages, scheduled uptime reports, incident timelines, team roles, and an MCP-based AI assistant. Alerts can be sent via email, SMS, Slack, Discord, Telegram, Microsoft Teams, and webhooks.
12 alternatives to Sentinel
Ranked by how well each tool replaces Sentinel: shared features, audience, price and popularity.
See what your visitors see. Uptime monitors say your site is up while visitors see a broke
Covers 4 of 15 key features.
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Covers 3 of 15 key features and starts cheaper.
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Covers 0 of 15 key features and starts cheaper.
60 out of 100 match$5.99/moFree website uptime monitoring with 10 monitors, multi-region alert confirmation, and 3 on
Covers 0 of 15 key features and starts cheaper.
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Ultralight footprint cloud-based monitoring solution for Microsoft Windows Server.
Covers 0 of 15 key features.
60 out of 100 matchContact salesWebsite uptime monitoring with alerts and status pages
Covers 0 of 15 key features and starts cheaper.
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