Panelbear is now Cronitor RUM

  • checkmark Traffic, performance and errors in a single tool
  • checkmark Cookie-free and designed for privacy
  • checkmark Powerful monitoring and alerting, built-in

See site traffic in real-time.

Monitor what's happening on your website in real-time. Measure and compare visit by country, browser and referrer to better understand your traffic.

Build. Faster. Websites.

Frustrated visitors are more likely to abandon your site. Measure key performance metrics such as Page Load Time and Core Web Vitals. Breakdown by time spent on DNS, SSL, Network, Rendering and more.

Deliver a bug-free experience.

Correlate errors and performance issues with impacted conversion rates. Segment your traffic to understand which countries or browsers are most affected.

Problems? Be the first to know.

Configure alerts for traffic spikes, performance regressions and more. Identify and troubleshoot issues before they impact your business.

Designed for visitor privacy.

We automatically de-personalize visitor data, and don't use tracking cookies. Our analytics script is fully open source, and you can process personal data on a server you control. Read more on how we handle personal data.

You're in great company

Join 60,000+ developers, and thousands of customers all around the globe.

Product Highlights

Measure your website traffic in real-time

Access dozens of website metrics in real time. From conversion rate to page load time by country to top referrers - we've got you covered.

Learn about Real-User Monitoring (RUM) ->

Understand your end user experience

Frustrated visitors are more likely to leave your site. Troubleshoot issues and improve the performance of your most important pages.

Learn about Core Web Vitals ->

Segment and compare

Drill down by country, page, referrer or any other dimension. Compare metrics to surface gaps and opportunities for performance improvements.

Learn about key web performance metrics ->

Top browsers and devices

Understand which browsers, devices and operating systems is your website most popular in so you can prioritize your efforts.

Correlate errors with conversion rates

Track which website errors are impacting your business. Breakdown by country or browser to troubleshoot issues faster.

Optimize the user journey

Measure and improve how relevant is your content to your visitors. Reduce friction and deliver a better experience on your website.

Keep your website fast

Our SDK is super lightweight and does not slow down your website. User data is automatically de-personalized so it can't be traced back to a person.

Alerts and notifications

Receive notifications whenever something's up. Next time your site is trending on social media you'll be the first to know.

Email reports

Get daily, weekly or monthly traffic reports delivered straight to your inbox. Stay up-to-date with your website's most important metrics.

Reliability at scale


Uptime last 12 months


Events received per day


Website & API checks per day


Jobs monitored per day


Alerts sent per day


Founded in California

Case Study

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

Read More →
Case Study GreatWaves

GreatWaves uses Cronitor to automate WiFi deployments and rollbacks.

Read More →

"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

Monitoring for Developers