updown.io is a HTTP monitoring solution with a clean UI and a cheap and simple pricing. It notifies you of downtimes by email or SMS and provides a public status page you can share.


Upptime is described as 'GitHub-powered open-source uptime monitor and status page' and is a Uptime Monitor service in the network & admin category. There are more than 100 alternatives to Upptime for a variety of platforms, including Web-based, SaaS, Windows, Self-Hosted and Linux apps. The best Upptime alternative is Uptime Kuma, which is both free and Open Source. Other great apps like Upptime are Better Stack Uptime, Tianji, UptimeRobot and Pingdom.
updown.io is a HTTP monitoring solution with a clean UI and a cheap and simple pricing. It notifies you of downtimes by email or SMS and provides a public status page you can share.


AgentSlug.com is simple but perspective application to monitor your website. For now, you can find there a full featured uptime monitoring tool. However, the app is developed constantly to provide complementary webmaster tools in the nearest future.




Latency test is a tool that helps you periodically test the latency of your website or API and monitor uptime. It let's you know if your website is down or slow using off the shelf integrations, such as E-mail, Slack, OpsGenie, PagerDuty, etc.




phpSysInfo: a customizable PHP script that displays information about your system nicely
Single tool that monitors all aspects of websites, including availability, domain, certificate, security and script errors.


Fluxguard uses Google headless Chrome to monitor entire sites for changes. It provides 3 different levels of change monitoring, pixel change detecting comparing screenshots, code-level comparison of the rendered DOM, and extracted text comparison.





Monitor your website, REST API, SSL, Domain, Server, Port. Free 5 monitors. Checked every 5 minutes.
Get alerted if your website is down via email, teams, webhook etc.


Monitoring the availability of websites or servers and controlling performance and response time. Receiving alerts when a test result is negative. Discovery offer for monitoring a website for free.




Get notified by the simplest uptime monitoring service in the world, when your website is down or your certificate becomes invalid. No more, no less.


IsZDown monitors the downtime of thousands of applications, websites, and services across the world including SAAS services, internet, phone, electricity, apps, and websites that go down and apps that aren’t working.

