Open Source SIEM
Open source tool to monitor your servers and websites
Scalable, distributed monitoring system for high-performance computing
IP Monitor notifies you when your public IP address changes
Creates web pages that show information about Ethernet switches.
MitM pentesting opensource toolkit
Webbased Dashboard to show the status of your IT infrastructure
A SNMP agent for Cacti
Rule Engine for State and Event Monitoring
Creates easy to interpret logs of source-natted connections
Nelmon is a collection of plugins for Nagios and compatible products