Similar to LwIP

Telepathy (software)

Traceroute

TUN/TAP

Twisted (software)

Unison (software)

Vyatta

VyOS

WinSCP

Wireshark

Wpa supplicant

XChat

Xrdp

Zabbix

Ifconfig

Kontact#News Feed Aggregator

Applet

Instant messaging#Review of products

Internet bot

Web application

Web framework

Web browser

CURL

QualNet

Web crawler