bosh : BOSH is an open source tool for release engineering, deployment, lifecycle management, and monitoring of distributed systems.
LibreNMS : A fully featured network monitoring system that provides a wealth of features and device support.
healthchecks.io : Cron Monitoring. Get Notified When Your Cron Jobs Fail.
Make a HTTP GET request to this address from your cron job, daemon, script or long running tas...
Infection Monkey : The Infection Monkey is an open source security tool for testing a data center's resiliency to perimeter breaches and internal server infection. The M...
Free open source web page change detection. Simply monitor which websites had a text change.