Website uptime monitoring. Be notified by email when your site is down. Free and open source, monitor as many URLs as you want. You can hack it and host it yourself or use the official instance.
Platforms
- Online




Pingdom is described as 'Monitors uptime, downtime, and website performance in real time using synthetic and real user data, with instant alerts, customizable reports, and analytics' and is a popular website monitoring tool in the network & admin category. There are more than 100 alternatives to Pingdom, not only websites but also apps for a variety of platforms, including SaaS, Windows, Self-Hosted and Linux apps. The best Pingdom alternative is Better Stack. It's not free, so if you're looking for a free alternative, you could try Better Stack or Web Check. Other great sites and apps similar to Pingdom are UptimeRobot, Google Lighthouse, StatusCake and Tianji.
Website uptime monitoring. Be notified by email when your site is down. Free and open source, monitor as many URLs as you want. You can hack it and host it yourself or use the official instance.




Keep our eye on your sites 24/7. Be the first to know that site is down or responds slowly.

Check if website is online by sending a ping to the IP or URL - is it down right now - is it down for me only - is it down for everyone or just me - is it down or up

dashboards.io - Visual Dashboards giving real-time visibility of your business through monitoring and alerting so you can concentrate on your business while we take care of your systems. Using Google Analytics, PageChecks, WebPings and SSL Checks.




Simple website monitoring. Get email and SMS when your website goes down. Completely Free. Monitor SSL certificate, different URLs, view downtime reports. Provides also automatic offsite backups of your website.
Cloud-based website uptime monitoring - receive instant alerts if your website becomes slow or unavailable.
Status by Broos Action is a lightweight, cost-effective tool designed to help system owners monitor uptime and service health in real time. It offers customizable status pages, incident tracking, and performance analytics.




Monika is a command-line application to monitor every part of your web app using a simple YAML configuration file. Get alert notifications through SMTP, Discord, Slack, WhatsApp, and many more when your site is down but also when it's slow!.


Opsee is uptime monitoring for microservices running in AWS. It continually tests services, alerting you of outages and breaking changes. There's no agent to install and no configuration to manage.
It is an All-In-One Site Monitoring & SEO Tool that Reports site Performance, Monitoring Key aspects from Server Health to Domain Expiry, Title text and Website Uptime with instant Alerts to any Issues.







