VoIP SIP and SKINNY quality analyzer and packet / audio recording tool
Open Source Monitoring System for performance and availability.
Nagios Open Source network monitoring software - The Standard In ITM
Enhanced Apache Server Status page - for one or multiple servers
Firewall log analyzer
Monitoring and reporting web gui for Bacula
Fritz!Box SmartHome Monitoring with PRTG and AHA-Interface
Painel de Monitoramento em PHP/MySQL
free netflow analyzer
A tool that helps users see all their PC WiFi passwords at a glimpse.
Enterprise-class, distributed monitoring solution for networks & apps
Xplico is a Network Forensic Analysis Tool (NFAT)
PHP-based looking glass for Cisco, Juniper & Zebra/Quagga routers
OPTOSS Next Gen Network Management System (NG-NetMS)
PotHead
Webinterface to (un)ban IPs in Fail2Ban
Open Source SIEM
Open source tool to monitor your servers and websites
Scalable, distributed monitoring system for high-performance computing