Similar to Varnish_(ソフトウェア)

NPF (firewall)

Ns (simulator)

Open Transport

OpenMosix

OpenNTPD

Opentracker

OpenWrt

OTRS

Pandora FMS

PF (firewall)

Ping (networking utility)

Point-to-Point Protocol daemon

Proxomitron

Requests (software)

Route (command)

Squid (software)

TCP Wrappers

Telepathy (software)

Traceroute

TUN/TAP

Twisted (software)

UIP (software)

Unison (software)

Vyatta

VyOS

WinSCP

Wpa supplicant

XChat