Know your site is down before your customers do
Monitor websites, SSL certificates and servers around the clock. The moment something breaks, we alert you on email, Slack, Discord, Telegram or your own webhook.
5 free monitors · checks every 5 minutes · paid plans check every minute
What you can monitor
Everything your customers depend on
Website monitoring
We request your site on a schedule and alert you on errors, timeouts or 4xx/5xx responses.
Learn more →Keyword monitoring
A page can return 200 and still be broken. Check that a word is (or isn't) on the page.
Learn more →SSL monitoring
Get warned days before a certificate expires, and alerted if it already has.
Learn more →Port monitoring
Check that mail, databases, SSH or any TCP service is accepting connections.
Learn more →How it works
Set up in three steps
Add a monitor
Enter a URL or a host and port. Optionally add a keyword to look for.
Choose your alerts
Connect email, Slack, Discord, Telegram or a webhook. Send a test to be sure.
Relax
We check on schedule and alert you when it goes down, and again when it recovers.
Alerts
Alerts where your team already is
Every plan includes every alert channel. You're told when a monitor goes down, with the reason, and again when it's back up, with how long it was down.
See all integrations →Built for reliability
Fewer false alarms. Clearer answers.
No false alarms
Choose how many failed checks in a row count as down, so a single network blip doesn't wake you up.
Response time charts
See how fast each monitor responds over the last 24 hours, with failures highlighted.
Uptime reports
Uptime for the last 24 hours, 7 days and 30 days for every monitor.
Incident history
Every outage is logged with when it started, how long it lasted and why.
Check on demand
Run a check instantly after a deploy instead of waiting for the next one.
Secure by design
Alert credentials are encrypted at rest, and every account is isolated from the others.
Pricing
Start free. Upgrade when you grow.
- 5 monitors
- Checks every 5 minutes
- Email, Slack, Discord, Telegram alerts
- 90 days of history
- 50 monitors
- Checks every minute
- All alert channels + webhooks
- SSL expiry tracking
- 90 days of history
- 500 monitors
- Checks every minute
- All alert channels + webhooks
- SSL expiry tracking
- Priority support
Frequently asked questions
What is uptime monitoring?
We visit your website or connect to your server on a schedule, from our servers. If it doesn't respond correctly, we alert you so you can fix it before customers notice.
How often do you check my site?
Every 5 minutes on the Free plan, and as often as every minute on paid plans. You can also run a check any time with "Check now".
What counts as "down"?
A timeout or connection error, an HTTP 4xx/5xx response (you can allow specific codes), a missing keyword, an expired SSL certificate, or a closed port. You choose how many failed checks in a row trigger an alert.
How will I be notified?
By email, Slack, Discord, Telegram or a webhook to your own system. You get one alert when a monitor goes down and one when it recovers.
Do I need to install anything?
No. Monitoring happens from our side. Just add the URL or host you want us to watch.
Can I monitor servers that aren't websites?
Yes. Port monitors check that any TCP service (mail, database, SSH and so on) accepts connections.
Is there a free plan?
Yes, free forever for up to 5 monitors. No card required.
Start monitoring in under a minute
Add your website, choose where alerts should go, and we'll start checking right away. Free forever for up to 5 monitors.