HAZOTA

This plugin publishes a simple endpoint at <code>/kmut.txt</code> on your site to expose your account identifier for seamless integration with KissMyUpTime’s completely free uptime monitoring service.
A <a href="https://kissmyuptime.com" rel="nofollow ugc">KissMyUpTime</a> account is required, and you can create one for free – no personal data required.
KissMyUpTime offers a real-time interface and instant notifications across all your devices, along with precise uptime percentage calculations, an unlimited number of checks, boostable intervals, and multiple nodes around the world.

KissMyUpTime

Helps you easily integrate KissMyUpTime's completely free uptime monitoring service with your WordPress site.

Beherit

A simple widget that shows the status of the monitored services in the Uptime Robot service. You only need to enter your Uptime Robot API key and add widget to website.

Uptime Robot Widget

A simple widget that shows the status of the monitored services in the Uptime Robot service.

KissMyUpTime vs Uptime Robot Widget