Community-based GPL-licensed network monitoring system
VoIP SIP and SKINNY quality analyzer and packet / audio recording tool
Nagios Open Source network monitoring software - The Standard In ITM
Open Source Monitoring System for performance and availability.
Firewall log analyzer
A free Usenet server with SQL backend and RBAC.
Monitoring and reporting web gui for Bacula
dhcpy6d is a server for IPv6 DHCPv6 written in Python.
Proxy Cache and Web filtering Appliance
Painel de Monitoramento em PHP/MySQL
Zenoss - Intelligent IT Operations Management
Pioneering Private and Public Cloud Management since 2008
Enterprise-class, distributed monitoring solution for networks & apps
Database monitoring agent for zabbix
TACACS+ server for network devices
PHP-based looking glass for Cisco, Juniper & Zebra/Quagga routers
Track your ARP/MAC table changes and so much more