Monitorr, a free, self hosted, open source web page application ...

6 Best Open-Source Website Monitoring Tools in 2025 · 1. Upptime · 2. Uptime Kuma · 3. Cabot · 4. Zabbix · 5. Sensu · 6. Nagios Core · 1. Better Stack · 2.

Uptime Kuma is an easy-to-use self-hosted monitoring tool. GitHub Sponsors · Translation status. Live Demo. Try it!

Best and simplest tool for website change detection, web page monitoring, and website change alerts. Perfect for tracking content changes, price drops, ...

Open source monitoring for networks, servers and more. Set up custom checks, get alerts fast and keep full control of your infrastructure. Open Source · Icinga » The Open Source... · Subscriptions · Icinga Documentation

Open Observe offers real-time monitoring of website performance, enabling you to track key metrics such as page load times, response times, and error rates.

Start monitoring in 30 seconds. Use advanced SSL, keyword and cron monitoring. Get notified by email, SMS, Slack and more. Get 50 monitors for FREE!

The industry standard in open source IT monitoring tools. Free, powerful monitoring and alerting for servers, networks, applications and services. Downloads · Projects · FAQ · Nagios CSP Upgrade

Proudly Open Source. Showcase your uptime with a status page. Monitor your API and website globally, identify performance issues, downtime and receive alerts ...

URL monitoring made easy: self-hosted open-source tool for checking your website availability ... Freshping (https://www.freshworks.com/website- ...

Zabbix is an enterprise-class, open-source monitoring solution that makes network and application monitoring simple. Download and install Zabbix · Get Zabbix Cloud · What's new in Zabbix 7.2 · License