• LibPcap the canonical packet capture library. most of the tools here use it in some fashion.
• WinPcap is the Windows version of LibPcap
• LibDnet dugsong’s packet creation and networking library.
• LibNet Route’s packet creation suite.
• LibnetForJava from Shakal Shakal
• LibNids useful packet capture and manipulation routines.
• LibSf route’s library for probing other operating systems.
• PacketPurgatory from SYN-ACK Labs provides userland per-packet modifications in a C API.

for you people with prying eyes

• NMap the classic
• PakettoKeiretsu the fast scanner

tools to generate packets on the fly.

• Hping2 is an old standard
• Nemesis based on LibNet, command line packets at will.
• TcpReplay replay a TcpDump file to the network.
• PackIt
• FirewallTester

tools to capture packets.

• TcpDump the canonical packet capture tool.
• WireShark (formerly known as Ethereal) even more decodes than TcpDump
• TcpFlow records communications sessions as bidirectional flows and stores the payloads.
• Argus builds flows

for all of you wifi hackers

• DStumbler from the dachb0den guys
• Kismet everyone’s favorite
• NetStumbler the classic

• Dsniff the archetype of a sniffer+mangler
• EtterCap similar to Dsniff

which combine paarts the above.

• Scapy is a strange swiss army knife written in Python.
• DnetTestTool comes with LibDnet and is actually quite interesting.

lets you access packets without compiling

• PyLibnet LibNet bindings in Python
• PyLibpcap LibPcap bindings in Python
• LibDnet now ships with bindings in Python
• PyCap is another Python LibPcap interface
• Btk Billy The Kid, packet capture and creation in Python

• PacketMaster gives you LibDnet in Tcl
• Tcap gives you access to LibPcap in Tcl
• PktSrc lets you access packets via Tcl

• PerlLibdnet gives you access to LibDnet in Perl
• NetRawIp is another raw IP networking module (packet capture, creation) in Perl

• RubyPcap gives you a full featured interface to LibPcap in Ruby
• RubyDnet gives you access to LibDnet in Ruby

and measurement tools

• IpAcct networking account tool
• Ntop network accouting tool
• IpsumDump
• NeTAMS
• Aguri network profiling tool
• IpCad is the IP accounting daemon
• Ipa is another IP accounting tool

• PayloadRecoveryScript from Bill McCarty

• Shoki toolset
• EtherApe

• Trickle preload library to control bandwidth
• MultiSpoof tool to parallelize networking

• TcpTraceroute

• http://sectools.org/
• http://www.tcpdump.org/related.html
• http://www.stearns.org/doc/pcap-apps.html