Down for Everyone or Just Me
downforeveryoneorjustme.com
Settles whether a site is actually down or only down for you
No sign-upClassic
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uptimerobot.com
Watches your site around the clock and emails you when it stops answering.
Point it at a URL and it checks from multiple locations on a schedule, alerting by email, Slack, webhook or SMS when a check fails, with a public status page you can share during an incident. It also watches SSL expiry and specific keywords on a page, which catches the failure mode where a site returns 200 while showing a database error. The free plan monitors a generous number of endpoints but at a five-minute interval, so a short outage can pass unnoticed.
Questions
A genuinely usable free tier with paid plans for volume or team features. Free monitors run on a five-minute interval, so an outage shorter than that can go unrecorded.
Yes. UptimeRobot sends your input to its own servers to process it. That is fine for public material; for anything containing personal data, use one of the on-device tools instead.
Free monitors run on a five-minute interval, so an outage shorter than that can go unrecorded.
Alternatives
Same category or same task, ordered by how closely they overlap.
downforeveryoneorjustme.com
Settles whether a site is actually down or only down for you
ipinfo.io
Tells you an IP address's owner, network and approximate location
microlink.io
Turns any URL into a screenshot, a PDF or structured metadata
ssllabs.com
Grades a site's TLS configuration from A+ down to F and says why
lookup.icann.org
The registry's own WHOIS record for a domain, with no upsell
pagespeed.web.dev
Scores a page on real-user Core Web Vitals and lab measurements