A suite of Monitoring Plugins (formerly known as nagios-plugins)
Self-hosted, lightweight server and website monitoring and O&M tool
Monitor temperature sensors, fan speed, voltage, load & clock speeds
An open source recommender system service written in Go
The Active Monitoring System
Disk Inspection and Monitoring
Scouter is open source APM (Application Performance Management) tool
Status page with uptime monitoring & API monitoring as code
The core of our monitoring platform
An eye on your system
Apache HertzBeat(incubating) is a real-time monitoring system
Application Performance Monitoring System
Visibility into servers, applications, and infrastructure
Lightweight network IP scanner
Cross-platform lib for process and system monitoring in Python
A distributed and high-performance monitoring system
A Python based monitoring and tracking tool for Plex Media Server
The Network UPS Tools repository
The open source, full-stack monitoring platform
Real-time monitoring for Proxmox, Docker, and Kubernetes
pg_activity is a top like application for PostgreSQL server activity
Community-based GPL-licensed network monitoring system
An interactive NVIDIA-GPU process viewer and beyond
Monitorix is a free, open source, lightweight system monitoring tool
A system monitoring tool that exposes system metrics