Looking for an UptimeRobot Alternative?

If you're comparing uptime monitors, here's what Site Monitor offers: downtime and recovery alerts, response-time thresholds, and content checks that tell you when a page that still returns 200 OK has changed or broken.

Start watching free → Explore the live demo

Free plan · 10 URLs · hourly checks · 2 AI summaries/mo · no credit card

Updated

How it works

  1. Add your URLs and APIs

    Set the HTTP method, headers, and body for APIs, and the expected status code or response text.

  2. Turn on change detection

    Get alerted when page content changes, not just when the URL stops responding.

  3. Share your status

    Publish a public status page or embed live status on your site.

You choose which alerts each URL sends — downtime, content changes, slow responses — and we email you when they happen.

What Site Monitor offers

  • Content change detection for a whole page or one element
  • Plain-English AI summaries of what changed
  • Uptime, recovery, and response-time alerts
  • Broken-link checks and screenshot history (paid plans)
  • Public status pages and an embeddable status widget
  • A Free plan: 10 URLs, hourly checks, 2 AI summaries a month

Catch pages that are up but wrong

An error message rendered inside a working layout, an empty product list, or a missing checkout button can all return 200 OK. Site Monitor's content checks are designed to catch these alongside regular uptime checks.

Paid plans check as often as every 5 minutes; the Free plan checks hourly.

How to choose a website monitor

Start with what you need to know. If you only care whether a site responds, a basic uptime check is enough. If you need to know what changed on a page — a price, a policy clause, a list of dates — look for content change detection and element (CSS selector) targeting.

Then consider where checks run (in the cloud or on your own machine), how often you need them, how alerts reach you, and whether you want summaries of changes or raw diffs. Trying two tools side by side on the same URLs for a week is the most reliable way to decide.

Frequently asked questions

Does Site Monitor do uptime monitoring?

Yes. Every monitor tracks availability and response time, with one alert when a URL goes down and one when it recovers. The Free plan covers 10 URLs checked hourly.

Can Site Monitor check APIs?

Yes. Set the HTTP method, headers, and body, and assert an expected status code or text in the response.

How often does Site Monitor check a page?

Free checks every hour. Paid plans check as often as every 5 minutes, and you can set the interval per URL.

Is Site Monitor free?

Yes. The Free plan covers 10 URLs checked every hour, with 2 AI change summaries a month — no credit card required. Upgrade only if you need faster checks, more URLs, or more AI summaries.

Start watching your first page

Start watching free → Explore the live demo

Free plan · 10 URLs · hourly checks · 2 AI summaries/mo · no credit card

Related

UptimeRobot is a trademark of its respective owner. Site Monitor is an independent product and is not affiliated with, endorsed by, or sponsored by UptimeRobot. This page describes Site Monitor only — see UptimeRobot's own website for information about their product.