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
Floating window used to display current network speed, CPU & memory
The Active Monitoring System
Monitor temperature sensors, fan speed, voltage, load & clock speeds
BGP and RPKI monitoring tool
Bandwidth monitor and rate estimator
Open-source systems performance monitor
Centralized network visibility and continuous asset discovery
Community-based GPL-licensed network monitoring system
An eye on your system
Application to comfortably monitor your Internet traffic
Monitor temperature sensors, fan speeds, voltages, load & clock speeds
A distributed and high-performance monitoring system
Apache HertzBeat(incubating) is a real-time monitoring system
Open source monitoring system and time series database
A simple program to monitor your network/data usage
A fancy self-hosted monitoring tool
The core of our monitoring platform
pg_activity is a top like application for PostgreSQL server activity
A full packet capturing, indexing, and database system
Zeek is a powerful network analysis framework