The world's leading
uptime monitoring service.

Get 50 monitors with 5-minute checks totally FREE.

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Currently, we keep an eye on 7,100,000 monitors for more than 1,900,000 users and companies.
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  • NASA logo
  • Moody's logo
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All you really care about 
monitored in one place.

Website monitoring icon

Website monitoring

Be the first to know that your website is down! Reliable monitoring warns you before any significant trouble and saves you money.

SSL monitoring icon

SSL monitoring

Don’t lose visitors because of expired SSL certificate. Get notified 30, 14 and 7 days before expiration so you have time to renew.

Port monitoring icon

Ping monitoring

Leverage one of the most used tools administrators use to check the availability of network devices.

Port monitoring icon

Port monitoring

Is the email service still UP? Or what about the critical database server? Let's check! Monitor any specific service running on any port.

Background job monitoring icon

Cron job monitoring

Also known as heartbeat monitoring. Monitor recurring background jobs or intranet devices connected to the internet.

Background job monitoring icon

Keyword monitoring

Use keyword monitoring to check presence or absence of specific text in the request's response body (typically HTML or JSON).

Advanced features for advanced users.

Share incident updates

Send status updates via an email to your Status page subscribers.

White-labeled Status pages

Customize colors, add your logo or even link your custom domain.

Response times

See your response times in a chart to reveal performance hiccups.

Maintenance windows

Set up maintenance windows to prevent alarms during the planned maintenance.

Custom HTTP requests

Need to set an advanced HTTP header? We've got you covered!

Multi-location checks

We verify incidents from multiple locations to prevent false-positives.

Downtime happens.
Get notified!

Downtime happens even to the best of us. But it’s important to know it before customers are affected!


Email is the most popular way for any notification. Get alerted!


Get alerted instantly by SMS, useful when you are offline!

Voice call

Get an automated voice call from us whenever your website is down.


Let us send you a private message on Twitter about your outages.


Slack messages are a great way to inform the entire team!


Integrate your Zapier account to get alerted right away.


Telegram messages are great to get quickly alerted.


For advanced alerting you can setup custom webhooks to your specific system.


Get important monitor status updates in your Discord messages.
Status page screenshot

Keep monitoring everywhere you go.

Get instant notifications, manage monitors and check your uptime statistics on the go.

Status page screenshot

Inform your customers about incidents with status pages.

Be transparent. Inform customers about planned outages. Show them how you thrive to make your service 100% online.

Subusers management illustration

Add your team members to keep them notified.

You can invite all your team members to access your monitors, keep them notified and manage incidents. Choose from three levels of user access: read, write and notify-only.

G2Crowd awward: High performer summer 2020

    Flexible pricing options.

    Save ~20% with annual billing.


    $ 0 / month
    Good for hobby projects. No credit card required!
    50 monitors
    • 😐5 min. monitoring interval
    • Included HTTP, port & ping monitor
    • Included Keyword monitor
    • Not inncluded / Not available SSL monitor
    • 😐Only 6 integrations
    • Full-featured status pages
    • No extra seats available


    Starts at
    $ 8 7 / month
    Great for solopreneurs and hobbyists.
    10-50 monitors
    • 60 sec. monitoring interval
    • HTTP, port & ping monitor
    • Included Keyword monitor
    • SSL monitor
    • πŸ™‚Only 9 integrations
    • Full-featured status pages
    • No extra seats available


    Starts at
    $ 64 54 / month
    For those who just need more.

    200-1,000 monitors
    • 30 sec. monitoring interval
    • HTTP, port & ping monitor
    • Included Keyword monitor
    • SSL monitor
    • All 12 integrations
    • Full-featured status pages

    Get your FREE account now,
    50 monitors included!

    Start monitoring in 30 seconds
    No credit card required!
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