Tools for Linux/Unix sysadmins
Monitorix is a system monitoring tool
Performance monitoring and logging software for Linux and Windows.
OPTOSS Next Gen Network Management System (NG-NetMS)
Track your ARP/MAC table changes and so much more
Open Source SIEM
Netflow visualisation and investigation tool
Scalable, distributed monitoring system for high-performance computing
SNMP poller for Xymon
Visual Network Management System
Creates web pages that show information about Ethernet switches.
The Internet of Things
User Computer and IP Address Tracking
MitM pentesting opensource toolkit
A suite of tools for monitoring GPFS clusters.