Self-hosted, lightweight server and website monitoring and O&M tool
The Network UPS Tools repository
A suite of Monitoring Plugins (formerly known as nagios-plugins)
A Network Packet Sniffing tool developed in Python 3
Lightweight network IP scanner
The Active Monitoring System
Monitor temperature sensors, fan speed, voltage, load & clock speeds
Application to comfortably monitor your Internet traffic
Community-based GPL-licensed network monitoring system
An eye on your system
A full packet capturing, indexing, and database system
The core of our monitoring platform
Apache HertzBeat(incubating) is a real-time monitoring system
A fancy self-hosted monitoring tool
pg_activity is a top like application for PostgreSQL server activity
Cross-platform lib for process and system monitoring in Python
Database connection pool written in Java
A Swiss army knife for your daily Linux network plumbing
Zeek is a powerful network analysis framework
A distributed and high-performance monitoring system
Monitorix is a free, open source, lightweight system monitoring tool
Performance Co-Pilot
Visibility into servers, applications, and infrastructure
SNMP Exporter for Prometheus
High performance ping tool