Open source alertmanager projects
Every project in the registry tagged alertmanager, ranked by real GitHub adoption.
Prometheus Alertmanager
Docker hosts and containers monitoring with Prometheus, Grafana, cAdvisor, NodeExporter and AlertManager
Better Prometheus alerts for Kubernetes - smart grouping, AI enrichment, and automatic remediation
Related tags
Frequently asked questions
How many open source alertmanager projects are there?
This registry tracks 3 projects tagged alertmanager, with 18,289 GitHub stars between them. The most-adopted is alertmanager at 8,613 stars.
Are these alertmanager projects free to use?
Yes — 3 of the 3 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 alertmanager 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 alertmanager projects still maintained?
2 of the 3 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.