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52553 stars

Prometheus is an open-source monitoring system with a dimensional data model, flexible query language, efficient time series database and modern alerting approach.

Commerical Alternatives

Self hostable


G2 Score

4.4/ 5 (21 reviews)

Reviews (Snippets from G2)


  • Far more flexible than traditional monitoring solutions like Nagios. A wide variety of Prometheus metric exporters already in the community, and many open source products are natively incorporating Prometheus exporters.
  • Easy redeployable, very fast database (even the giant queries are running super-fast), concept of the services monitoring instead of the instances monitoring. Really adequate queries syntax, simple alerting, in-house integration with the Grafana.
  • It is very simple to use and has no external dependencies.
  • It has a powerful query language to retrieve and evaluate metrics.


  • You will have to know all the metric names in order to create rules and there are a lot of metrics.
  • It only supports HTTP APIs to pull the data into the DB. I wish it could add more methods like S3 pull etc.
  • This is not an easy setup.
  • I dont like the alert manager part , its really complex and we find difficulties to configure using equations and promQL stuff
  • The learning curve is bit steep and also there is no unique identifier for alerts generated by the Alertmanager.

Github Activity


Apache License 2.0

Repo last updated 12 days ago
View Github Readme

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