* [Nezha Monitoring v2.1.0](https://github.com/nezhahq/nezha) – Self-hostable, lightweight tool for monitoring servers and websites.

* [Riemann Tools v2.0.0](https://github.com/riemann/riemann-tools) – Collection of small programs that submit system and service metrics and events to a monitoring server.

* [K U L A 0.17.3](https://github.com/c0m4r/kula) – Lightweight self-contained Linux server monitoring tool that reads system interfaces, stores metrics in tiered ring-buffer files, and serves real-time Web and terminal dashboards.

* [Versus v1.4.3](https://github.com/VersusControl/versus-incident) – Incident management tool routing webhook alerts to Slack, Teams, email, and on-call systems with customizable templates.

* [ServiceRadar v1.2.83](https://github.com/carverauto/serviceradar) – Distributed network monitoring system for infrastructure and services in hard-to-reach or constrained environments with real-time monitoring and cloud-based alerting.

* [X.509 Certificate Exporter v4.2.0-rc.1](https://github.com/enix/x509-certificate-exporter) – Prometheus exporter for monitoring X.509 certificate expiration in Kubernetes clusters or standalone.