Netcat Alternatives

Wireshark is the world's most widely-used network protocol analyzer software. With Wireshark you can get a better understanding on what's happening on your network. The software let's you do deep analysis across hundreds of protocols at a microscopic level. Wireshark is free and open-source and has been in active development by contributions from volunteers across the globe since 1998. Today the software is used by commercial and non-profit enterprises, government agencies, and educational institutions.

Packet Sender is a free and open source utility to allow sending and receiving network packets, with support for TCP, UDP, and SSL. The tool is designed to be while still providing enough features for power users to do what they need, allowing anyone to manage packets according to their needs. Packet Sender is most commonly used for testing network APIs, malware analysis, testing network connectivity/firewalls and security research.

pwncat is a sophisticated bind and reverse shell handler with many features as well as a drop-in replacement or compatible complement to netcat, ncat or socat. pwncat is like netcat on steroids with Firewall, IDS/IPS evasion, bind and reverse shell, self-injecting shell and forwarding magic - and its fully scriptable with Python (PSE)