* [Prometheus v3.10.0](https://github.com/prometheus/prometheus) – Monitoring system and time series database that collects metrics and triggers alerts based on specified conditions.

* [Tori v0.3.0](https://github.com/thobiasn/tori-cli) – Lightweight Docker monitoring with alerting, single binary, zero exposed ports, SSH-only access.

* [maintenant v1.1.2](https://github.com/kOlapsis/maintenant) – Single-container monitoring platform that auto-discovers services, tracks metrics, alerts, and publishes a status page.