Uptime Monitoring

Website and API monitoring, done right

  • checkmark Active monitoring from 12+ locations worldwide
  • checkmark Instant downtime alerts
  • checkmark Detailed performance analytics
Dashboard Screenshot Dashboard Screenshot
API Is Down - Gmail Alert
Website is down - Slack Alert

Trusted by Developers Worldwide

Understand performance trends

Answer questions with high fidelity performance data.

Create powerful API tests

Build trust in your APIs with active monitoring.

Stay on top of every problem

Be the first to know when incidents happen.

Keep everybody informed

Daily, weekly and monthly reporting for your whole team.

Everything you need for website monitoring

Monitor your complete website user experience in minutes, batteries included.

Start for free

Global uptime monitoring

Run your website and API checks from 12+ locations across 5 continents. Understand performance trends for each region, and focus your monitoring on where your users are located.

Product Highlights

Website monitoring

Ensure that your website is available all over the world and be alerted instantly when there is downtime.

Website Monitoring Guide ->

API monitoring

Check the uptime, performance and validity of your APIs with active monitoring.

API Monitoring Guide ->

Server monitoring

Setup checks for the SSH bastions, email servers and VPN endpoints you rely on.

Private Server Monitoring Guide ->

JavaScript? No problem

Run your website checks using real Chrome browsers to test your JavaScript apps.

Synthetic Monitoring Guide ->

Custom assertions

Build complex tests with custom assertions on page content, status code, response time and more.

Choose your locations

Select up to 12 locations for each test and focus your monitoring where your users are located.

Check every 30 seconds

Frequent checks can spot small problems before they become big incidents.

Real performance insights

Answer questions and monitor your SLAs with global and regional performance metrics.

No false alarms

Downtime is always verified by at least one additional region before an alert is triggered.

Developer friendly

Provision and version control your monitoring using our simple YAML configuration and CLI tools.

Live dashboards

See all of your APIs, websites and servers on a fast, easy to use dashboard with live updates.

Better uptime monitoring

Cronitor is a complete monitoring platform, not just another uptime monitoring tool.

Trusted by 1,000+ teams and counting


"Cronitor has increased our Operations staff's efficiency and responsiveness immensely. Their spin on micro-monitoring represents a best-in-class solution to the age old problem of visibility."

Ethan Erchinger Director of Operations

"I was finding too many cases where our cron jobs would silently fail - we sometimes would not find out for days that a job was broken. Cronitor gives our team the confidence and peace of mind that if a job is not running, we'll know fast."

Gary Malouf VP of Technology

"Before we used Cronitor, we had an important data backup job fail silently for over a month. We use Cronitor so that will never happen again!"

Natalie Gordon CEO
Case Study Aloft.ai

Aloft uses Cronitor to monitor realtime flight data and stay in compliance.

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Case Study GreatWaves

GreatWaves uses Cronitor to automate WiFi deployments and rollbacks.

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The world's leading job monitoring service


Jobs monitored by Cronitor


Events received per day


Website & API checks per day


Incidents detected


Alerts sent per day


Founded in California

Monitoring for Developers