packetsender ☆

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Description:
Network utility for sending / receiving TCP, UDP, SSL

Type: Cask | Latest Version: 8.9.1@0 | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Networking

Tags: networking debugging tcp udp ssl testing

Install: brew install --cask packetsender

About:
Packet Sender is a robust network utility designed for testing and debugging network services. It allows users to craft and send custom TCP, UDP, and SSL packets to any IP address and port. The tool supports both client and server modes, making it ideal for simulating device communication and verifying firewall rules.

Key Features:

Supports TCP, UDP, and SSL protocols
GUI and command-line interface (CLI) options
Persistent list of saved packets for quick reuse
Built-in asynchronous sending mode for high-speed testing
Includes a basic network listening utility

Use Cases:

Testing firewall rules and network connectivity
Debugging custom hardware or IoT device communication
Simulating server responses for client application development

Alternatives:

netcat (nc) – Netcat is a command-line staple for raw socket reads/writes, while Packet Sender offers a more accessible GUI and persistent packet management.
Wireshark – Wireshark is primarily a packet analyzer for inspection, whereas Packet Sender is focused on packet crafting and transmission.

Version History

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