Ethereal Alternatives

Wireshark is a network protocol analyzer for Unix and Windows. It lets you capture and interactively browse the traffic running on a computer network.

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

tcpdump is a common packet analyzer that runs under the command line.

NetworkMiner is a Network Forensic Analysis Tool (NFAT) for Windows.

Kismet is an 802.11 layer2 wireless network detector, sniffer, and intrusion detection system.

NetFort LANGuardian is a network visibility solution which uses deep packet inspection to monitor, troubleshoot, and report on user & network activity.

Fiddler is a debugging program for websites.

Native Cocoa app for capturing and analyzing packets.

Netcat is a featured networking utility which reads and writes data across network connections...

Ettercap is a suite for man in the middle attacks on LAN.

tcpflow, a TCP Flow Recorder, is a program that captures data transmitted as part of TCP...

Ostinato is a network packet and traffic generator and analyzer with a friendly GUI.