Cabot vs Prometheus: What are the differences?
Developers describe Cabot as "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. On the other hand, Prometheus is detailed as "An open-source service monitoring system and time series database, developed by SoundCloud". Prometheus is a systems and service monitoring system. It collects metrics from configured targets at given intervals, evaluates rule expressions, displays the results, and can trigger alerts if some condition is observed to be true.
Cabot and Prometheus can be primarily classified as "Monitoring" tools.
Cabot and Prometheus are both open source tools. It seems that Prometheus with 25K GitHub stars and 3.55K forks on GitHub has more adoption than Cabot with 4.43K GitHub stars and 479 GitHub forks.