Open Source Monitoring System for performance and availability.
VoIP SIP and SKINNY quality analyzer and packet / audio recording tool
Firewall log analyzer
Monitoring and reporting web gui for Bacula
Enterprise-class, distributed monitoring solution for networks & apps
inventory, asset management network monitoring and backup appliance
Open Source SIEM
Network Intrusion Detection and Full Packet Capture System
WatchTower is a cloud server monitoring and management tool
project no longer maintained