The Network UPS Tools repository
Self-hosted, lightweight server and website monitoring and O&M tool
A suite of Monitoring Plugins (formerly known as nagios-plugins)
Community-based GPL-licensed network monitoring system
Floating window used to display current network speed, CPU & memory
Lightweight network IP scanner
Monitor temperature sensors, fan speed, voltage, load & clock speeds
Application Performance Monitoring System
Application to comfortably monitor your Internet traffic
The core of our monitoring platform
An eye on your system
Monitor and troubleshoot transactions in complex distributed systems
Monitorix is a free, open source, lightweight system monitoring tool
Open source monitoring system and time series database
A full packet capturing, indexing, and database system
Apache HertzBeat(incubating) is a real-time monitoring system
pg_activity is a top like application for PostgreSQL server activity
Zeek is a powerful network analysis framework
Monitor temperature sensors, fan speeds, voltages, load & clock speeds
Performance Co-Pilot
A fancy self-hosted monitoring tool
Cross-platform lib for process and system monitoring in Python
High performance ping tool
A distributed and high-performance monitoring system
A Swiss army knife for your daily Linux network plumbing