Wireshark

Wireshark is the world's foremost network protocol analyzer. It lets you capture and interactively browse the traffic running on a computer network.

Free Open Source Mac OS X Windows Linux BSD

tcpdump

tcpdump is a common packet analyzer that runs under the command line. It allows the user to intercept and display TCP/IP and other packets being transmitted or received over a network to which the computer is attached.

Free Open Source Mac OS X Windows Linux BSD

netcat

Netcat is a featured networking utility which reads and writes data across network connections, using the TCP/IP protocol.

Free Open Source Mac OS X Windows Linux

Ettercap

Ettercap is a suite for man in the middle attacks on LAN. It features sniffing of live connections, content filtering on the fly and many other interesting tricks. It...

Free Open Source Mac OS X Windows Linux

NetworkMiner

NetworkMiner is a Network Forensic Analysis Tool (NFAT) for Windows. NetworkMiner can be used as a passive network sniffer/packet capturing tool in order to detect operating systems, sessions, hostnames, open ports etc.

Freemium Windows

SmartSniff

SmartSniff is a packet sniffer that capture TCP/IP packets and display them as sequence of conversations between clients and servers. You can view the TCP/IP...

Free Windows

Colasoft Capsa

Capsa performs real-time packet capturing, 24/7 network monitoring, protocol analysis, in-depth packet decoding, and automatic expert diagnosis.

Commercial Windows

LANGuardian

LANGuardian is the first and only deep packet inspection (DPI) software to provide SMB network managers with root cause information about network and user activity....

Commercial Mac OS X Windows Linux

Cocoa Packet Analyzer

Native Cocoa app for capturing and analyzing packets. Similar to Wireshark, but with a native interface (and less features). If you don't like the X11 GTK Wireshark...

Free Mac OS X

Pirni Pro

Pirni Pro is a network security tool designed for iOS, and specifically for iPhone and iPod Touch devices. It is capable of intercepting traffic on a wireless network...

Commercial iPhone

PsPing

PsPing is a command-line utility for measuring network performance. In addition to standard ICMP ping functionality, it can report the latency of connecting to TCP...

Free Windows

MicroOLAP TCPDUMP

microolap tcpdump is a clone of tcpdump , the most used network sniffer/analyzer for unix, compiled with the original tcpdump code (http://www.tcpdump .

Freemium Windows

AirSnare

AirSnare is another tool to add to your Wireless Intrusion Detection Toolbox. AirSnare will alert you to unfriendly MAC addresses on your network and will also alert...

Free Windows