UptimeRobot popularized the free "ping my site every 5 minutes" model, and a lot of tools now compete in that same space. If you're evaluating alternatives, here's what actually varies between them, and the point at which uptime checking alone stops being enough.

What do uptime-only tools actually check?

HTTP/HTTPS reachability, sometimes TCP-port checks, and in some cases keyword matching on the response body. That's a genuinely useful, cheap signal — "is this reachable from the outside right now" — and it's worth having regardless of what else you use.

What should you compare between uptime tools?

  • Check frequency — free tiers often check every 5 minutes; a server that goes down and recovers inside that window never gets reported.
  • Public status pages — whether you can share a branded, real-time status page with your own customers, or only see results in your own dashboard.
  • SSL and domain expiry warnings — a certificate or domain lapsing is a self-inflicted outage that's entirely predictable, and worth a separate warning well before it happens.
  • Alert channels — email is universal; Telegram, Slack, and webhook support varies a lot, and matters if your team doesn't live in email.

Where uptime-only monitoring stops being enough

An uptime check tells you a server is down. It can't tell you it's about to be — a slow memory leak, a disk filling up, a CPU pegged at 100% for an hour — because none of that necessarily takes the server offline until it suddenly does. If you're choosing between uptime tools because you actually run the servers being checked (rather than just watching a third party's endpoint), it's worth asking whether you need resource-level metrics and remediation too, not just a reachability ping.

Where MonitorFree fits

MonitorFree includes the uptime-tool feature set — HTTP/TCP/heartbeat checks, public status pages, SSL and domain expiry warnings — as one part of a larger tool, alongside live server-level metrics and the ability to actually act on what it finds (restart a service, kill a process, reboot). If external uptime checking is all you need, a dedicated uptime tool is a reasonable, often cheaper choice. If you also own the servers behind those endpoints, having both in one dashboard removes a second tool from the stack.

Get external uptime monitoring and server-level metrics in one free plan.

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Frequently asked questions

Does MonitorFree do external uptime monitoring like UptimeRobot?

Yes — HTTP(S), TCP-port, and heartbeat checks from outside your infrastructure, with SSL and domain-expiry warnings and a shareable public status page, all on the free tier.

Can I use MonitorFree for uptime checks only, without installing the agent?

Yes — external monitoring works without the agent. You'd only need the agent installed if you also want live CPU/memory/disk metrics and remote actions on that server.

What's the check frequency on the free plan?

Checks can be configured as frequently as every 30 seconds, depending on the monitor type.