Open source prometheus projects
Every project in the registry tagged prometheus, ranked by real GitHub adoption.
Open source metrics collection, storage, and alerting
Cost-effective log aggregation that indexes labels, not full text
Distributed tracing, metrics, logs, and GenAI monitoring in one
High-performance time series database for metrics and logs
Highly available Prometheus setup with long term storage capabilities. A CNCF Incubating project.
Exporter for machine metrics
Full-stack observability without code changes
Unified observability database for metrics, logs, and traces
Add-on agent to generate and expose cluster-level metrics.
All-in-one observability with unlimited data ingestion
Related tags
Frequently asked questions
How many open source prometheus projects are there?
This registry tracks 10 projects tagged prometheus, with 188,201 GitHub stars between them. The most-adopted is Prometheus at 66,106 stars.
Are these prometheus projects free to use?
Yes — 10 of the 10 carry an explicit open-source licence across 2 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.
Which prometheus project should I choose?
The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.
Are these prometheus projects still maintained?
10 of the 10 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.