Open source alerting projects
Every project in the registry tagged alerting, ranked by real GitHub adoption.
Real-time monitoring for systems and applications
Unified observability for metrics, logs, traces, and more
Open source metrics collection, storage, and alerting
Build your own AI SRE agents. The open source toolkit for the AI era.
Advanced automated status page for real-time monitoring
Unify, automate, and elevate your monitoring workflow
Full-stack observability without the enterprise price tag
Status page and uptime monitoring for growing teams
Full-stack observability without code changes
An AI-powered next-generation open source real-time observability system.
Enterprise monitoring for networks, apps, and infrastructure
Better Prometheus alerts for Kubernetes - smart grouping, AI enrichment, and automatic remediation
Alert dashboard for Prometheus Alertmanager
Parseable is an open source, unified infrastructure observability platform built in Rust on a data lake architecture. It tracks logs, metrics, traces, and event
🦥 Easy and simple Prometheus SLO (service level objectives) generator
The only tool you need to know what is happening and how to fix it.
First open-source data discovery and observability platform. We make a life for data practitioners easy so you can focus on your business.
Kibana Alert & Report App for Elasticsearch
An ops AI Agent that understands your infrastructure, finds the root cause, and fixes it — right from Slack, Telegram, Lark or DingTalk.
Simple. Scalable. Multi-cloud monitoring.
Krawl is a customizable, lightweight, cloud-native web deception server and anti-crawler that creates fake web applications with low-hanging vulnerabilities usi
Self-hosted monitoring for Docker, Kubernetes and uptime. Single Go binary, no agent config, live alerts. Drop a container, your stack is monitored.
Related tags
Frequently asked questions
How many open source alerting projects are there?
This registry tracks 22 projects tagged alerting, with 323,749 GitHub stars between them. The most-adopted is NetData at 81,246 stars.
Are these alerting projects free to use?
Yes — 21 of the 22 carry an explicit open-source licence across 4 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 alerting 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 alerting projects still maintained?
21 of the 22 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.