scamper
Network & VPN
Advanced traceroute and network measurement utility
scilla
Network & VPN
DNS, subdomain, port, directory enumeration tool
sdl2_net
Network & VPN
Small sample cross-platform networking library
sdns
Network & VPN
Privacy important, fast, recursive dns resolver server with dnssec support
ser2net
Network & VPN
Allow network connections to serial ports
servus
Network & VPN
Library and Utilities for zeroconf networking
shuffledns
Network & VPN
Enumerate subdomains using active bruteforce & resolve subdomains with wildcards
sing-box
Network & VPN
Universal proxy platform
slirp4netns
Network & VPN
User-mode networking for unprivileged network namespaces
slurm
Network & VPN
Yet another network load monitor
smartdns
Network & VPN
Rule-based DNS server for fast IP resolution, DoT/DoQ/DoH/DoH3 supported
sniffer
Network & VPN
Modern alternative network traffic sniffer