Open Source Monitoring System for performance and availability.
Nagios Open Source network monitoring software - The Standard In ITM
Web Gateway Appliance
Xplico is a Network Forensic Analysis Tool (NFAT)
PCAP from another point of view
A powerful network security tool, easy, safe and totally free.
The Internet of Things
Collects data about network useage using libpcap.
OpenMPI tool for monitoring openMPI applications
A script to find open Wi-Fi connections and the strongest signal
Logs IP to IP contact, number of packets, bytes.