openstatusHQ / openstatus

Open-source status page, incident response and uptime monitoring

cloudprober / cloudprober

An active monitoring software to detect failures before your customers do.

basecamp / upright

Synthetic monitoring engine with Playwright and Prometheus metrics

hyperjumptech / monika

Monika is a command line application to monitor every part of your web app using a simple YAML configuration file. Get alert not only when your site is down but also when it's slow.