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)
Lightweight network IP scanner
Monitor temperature sensors, fan speed, voltage, load & clock speeds
pg_activity is a top like application for PostgreSQL server activity
Network Enumeration Tool for Host Exploration and Recon
Floating window used to display current network speed, CPU & memory
A fancy self-hosted monitoring tool
High performance ping tool
An eye on your system
A Swiss army knife for your daily Linux network plumbing
Monitorix is a free, open source, lightweight system monitoring tool
Collect and display information and stats from a running PostgreSQL
A system monitoring tool that exposes system metrics
Application to comfortably monitor your Internet traffic
Zeek is a powerful network analysis framework
The core of our monitoring platform
Monitor temperature sensors, fan speeds, voltages, load & clock speeds
Community-based GPL-licensed network monitoring system
Visibility into servers, applications, and infrastructure
A simple server monitor tool
Open source monitoring system and time series database
Monitor and troubleshoot transactions in complex distributed systems