The Network UPS Tools repository
eBPF-based Linux kernel networking debugger
Ncurses-based monitoring application for wireless network devices
The systemd system and service manager
CUPS is a standards-based, open-source printing system
Communication framework for data-centric high-performance applications
An opensource OpenWrt variant for mainland China users.
A secure, feature-rich, customizable embedded Linux network appliance
Firewall log analyzer
An advanced network simulator to design and configure virtual networks
VoIP SIP and SKINNY quality analyzer and packet / audio recording tool
Open Source Monitoring System for performance and availability.
Nagios Open Source network monitoring software - The Standard In ITM
Network Load Balancer and Application Security
HTTP proxy to block ads and customize webpages
Remote control software for applications using wi-fi or bluetooth
ICMP-based network bandwidth measurement tool
Next Generation Open Source Firewall
Packet generator and packet editor for Windows, Linux, BSD, and macOS
Anti Spam SMTP Gateway
CacheGuard Gateway is a UTM, a WAF, and a QoS management appliance.
A free Usenet server with SQL backend and RBAC.
Delay-Tolerant Networking suitable for spacecraft and ground