Get an insight into the inner-workings of a given website: uncover potential attack vectors, analyse server architecture, view security configurations, and learn what technologies a site is using.


The best open source alternative to Pingdom is Web Check. If that doesn't suit you, our users have ranked more than 100 alternatives to Pingdom and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Pingdom are Uptime Kuma, Tianji, Google Lighthouse and WebPageTest.
Get an insight into the inner-workings of a given website: uncover potential attack vectors, analyse server architecture, view security configurations, and learn what technologies a site is using.


Self-hosted monitoring tool to track uptime via HTTP(s), TCP, Ping, and more with reactive design. Offers 20-second interval checks, notifications through various channels like Webhook, Telegram, supports multiple languages, includes status page and ping charts, aiding small to medium enterprises effectively.


Unified analytics and uptime platform, optimized for casual users with a streamlined, deploy-anywhere approach.



Lighthouse is an open-source, automated tool for improving the quality of web pages. You can run it against any web page, public or requiring authentication. It has audits for performance, accessibility, progressive web apps, SEO and more.




Run a free website speed test from around the globe using real browsers at consumer connection speeds with detailed optimization recommendations.




Open-source Node.js status page tool, designed to make service monitoring and incident handling a breeze. It offers a sleek and user-friendly interface that simplifies tracking service outages and improves how we communicate during incidents. And the best part?




PageSpeed Insights (PSI) reports on the performance of a page on both mobile and desktop devices, and provides suggestions on how that page may be improved.

Cabot is a free, open-source, self-hosted infrastructure monitoring platform that provides some of the best features of PagerDuty, Server Density, Pingdom and Nagios without their cost and complexity.



Koalati is a quality control and training platform built to help web developers and agencies ship better websites.



