Cabot vs Vulcan: What are the differences?

What is Cabot? Self-hosted, easily-deployable monitoring and alerts service - like a lightweight PagerDuty. 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. Monitor services (e.g. "Stage Redis server", "Production ElasticSearch cluster") and send telephone, sms or hipchat/email alerts to your on-duty team if those services start misbehaving or go down - all without writing a line of code.

What is Vulcan? DigitalOcean's API-compatible alternative to Prometheus. Vulcan is an API-compatible alternative to Prometheus. It aims to provide a better story for long-term storage, data durability, high cardinality metrics, high availability, and scalability. Vulcan is much more complex to operate, but should integrate with ease to an existing Prometheus environment.

Cabot and Vulcan belong to "Monitoring Tools" category of the tech stack.

Cabot and Vulcan are both open source tools. Cabot with 4.43K GitHub stars and 479 forks on GitHub appears to be more popular than Vulcan with 542 GitHub stars and 32 GitHub forks.