Cabot is a free, open-source, self-hosted infrastructure monitoring platform that provides some of the best features of PagerDuty, Server Density, Pingdom and Nagios without their cost and complexity.
Cost / License
- Free
- Open Source
Application types
Alerts
- Discontinued
Platforms
- Self-Hosted


Cabot is the most popular Self-Hosted alternative to PagerTree.
Cabot is the most popular Open Source & free alternative to PagerTree.
- Cabot is Free and Open Source


















































They do more than just on-call and alerting. They have a lot of features around SRE and Incident Management like SLO dashboard, executable runbooks, postmortems, automated incident timeline and status page.