Best Colasoft Capsa Alternatives & Competitors in 2024

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.

Open Source

Discover tools from the internet you never knew existed, curated with founders, tech enthusiasts (and amusement) in mind.

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

Open Source

Packet Sender can send and receive UDP, TCP, and SSL on the ports of your choosing.

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

Do you need to map a specific TCP or UDP port on your machine to another port on another machine?

Portfwd, Port Forwarding Daemon, stands for port forwarding daemon.

Simple Port Forwarding works with WebPages and not directly with your router.

TheCodingMonkeys, authors of software like SubEthaEdit.

Free open source tool to perform TCP based session relay

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

pwncat - netcat on steroids with Firewall, IDS/IPS evasion, bind and reverse shell, self-injecting shell and port forwarding magic - and its fully scriptable with Python (PSE)

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