The Network UPS Tools repository
Simple tool to configure Windows Filtering Platform (WFP)
ZMap is a fast single packet network scanner for network surveys
High performance ping tool
iperf3: A TCP, UDP, and SCTP network bandwidth measurement tool
SQL operating system instrumentation and monitoring framework
A Swiss army knife for your daily Linux network plumbing
Ncurses-based monitoring application for wireless network devices
Virtualization software for x86_64 hardware
Performance Co-Pilot
Cross-platform multi-protocol VPN software
The systemd system and service manager
Communication framework for data-centric high-performance applications
eBPF-based Linux kernel networking debugger
The FRRouting Protocol Suite
CUPS is a standards-based, open-source printing system
A library for blocking access to network on-the-fly
An advanced network simulator to design and configure virtual networks
Open Source Monitoring System for performance and availability.
VoIP SIP and SKINNY quality analyzer and packet / audio recording tool
Nagios Open Source network monitoring software - The Standard In ITM
Powerful, open-source network protocol analyzer