Community-based GPL-licensed network monitoring system
VoIP SIP and SKINNY quality analyzer and packet / audio recording tool
Open Source Monitoring System for performance and availability.
A network security analysis and monitoring toolkit Linux distribution.
Nagios Open Source network monitoring software - The Standard In ITM
Fritz!Box SmartHome Monitoring with PRTG and AHA-Interface
The professional way to manage your WiFi network using FreeRADIUS
Enterprise-class, distributed monitoring solution for networks & apps
OPTOSS Next Gen Network Management System (NG-NetMS)
Open source tool to monitor your servers and websites
DOCSIS network management
The Simplest Multi-User Latency Monitoring Web App
Visual Network Management System
A SNMP agent for Cacti
DapZIlla Exede Satellite internet usage monitor has moved to
Tools to help you control IT systems and escape their control over you
Is your host up or down?
BGPHist stores MP-BGP updates activity and history into a database.