Cross-platform multi-protocol VPN software
Open Source Monitoring System for performance and availability.
Nagios Open Source network monitoring software - The Standard In ITM
Free UTM appliance: firewall, VPN, WAF and antivirus in one ISO.
A distribution of Nginx with some advanced features
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.