netcat

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

21 Alternatives To netcat

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Cocoa Packet Analyzer

Native Cocoa app for capturing and analyzing packets.

Debookee

Debookee is the simplest & most powerful network traffic analyzer for macOS.

Ethereal

Ethereal® is used by network professionals around the world for troubleshooting, analysis…

Ettercap

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

Fiddler

Fiddler is a debugging program for websites.

Intercepter-NG

Intercepter-NG is a multifunctional network toolkit for various types of IT specialists.
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Ixchariot

Instant performance assessment of complex networks from pre- to post-deployment.

JPerf

This project gives a better UI and new functionalities to the initial JPerf 1.

LANBench

LANBench is a simple LAN / TCP Network benchmark utility.
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LANGuardian

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

Nethogs

NetHogs is a small ’net top’ tool.

NetworkMiner

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

Nmap

Nmap Free Security Scanner, Port Scanner, & Network Exploration Tool. Download open source software for Linux, Windows, UNIX, FreeBSD, etc.

Packet Peeper

Packet Peeper is a free network protocol analyzer (packet sniffer) for Mac OS X.

Packetyzer

Packetyzer provides a Windows user interface for the Ethereal packet capture and dissection library.

Scapy

Scapy is a powerful interactive packet manipulation program.
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Wireshark

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

iperf

A TCP, UDP, and SCTP network bandwidth measurement tool

socat

socat is a relay for bidirectional data transfer between two independent data channels.
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tcpdump

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

tcpflow

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