Open Source Monitoring System for performance and availability.
Nagios Open Source network monitoring software - The Standard In ITM
A Java based fault and performance management system
Monitoring and reporting web gui for Bacula
Node Application Metrics provides a foundational infrastructure
Xplico is a Network Forensic Analysis Tool (NFAT)
Easily monitor network infrastructure services
Standalone web application allowing to monitor end points availability
Visual Network Management System
Web based management tool for unixes
project no longer maintained