Scapy

Input—per 1M tokens

Output—per 1M tokens

Context—tokens

WeightsClosed

About

Scapy is ranked #1 of 29 in network protocol analyzers on Inferse. It runs on API, Linux, macOS, Self-hosted, Web, Windows. There is a free plan.

Compared on network protocol analyzers

Free plan: Yesscapy.net
Traffic decryption: Yesscapy.net

Facts

Purpose: Scapy is a Python packet manipulation program and library that can forge or decode packets, send and capture them, and match requests with replies.github.com · 30 Sept 2026
Shell and library: Scapy can be used as an interactive shell or as a library.github.com · 30 Sept 2026
Network tasks: The project lists scanning, tracerouting, probing, unit tests, and network discovery among Scapy’s uses.github.com · 30 Sept 2026
Packet handling: Scapy can read and store packets in pcap files and can inject invalid frames and custom 802.11 frames.github.com · 30 Sept 2026
Protocol extensions: The documentation includes instructions for adding new protocols and extending Scapy with add-ons.scapy.readthedocs.io · 30 Sept 2026
Platform support: Scapy runs on Linux, macOS, BSD, and Windows; Windows installation requires Npcap.scapy.readthedocs.io · 30 Sept 2026
Optional dependencies: Plotting requires Matplotlib, while TLS decryption and PKI operations require the cryptography package.scapy.readthedocs.io · 30 Sept 2026
Security reporting: GitHub’s security page says the project has not set up a SECURITY.md file and provides a vulnerability reporting link.github.com · 30 Sept 2026
License: Scapy’s code, tests, and tools are licensed under GPL v2.github.com · 30 Sept 2026
Intended audiences: The project metadata lists developers, IT, science and research, system administrators, and telecommunications as intended audiences.github.com · 30 Sept 2026
Documentation: The project provides online documentation with installation instructions, usage guides, troubleshooting, and an API reference.scapy.readthedocs.io · 30 Sept 2026
Purpose: Scapy is a Python program for sending, sniffing, dissecting and forging network packets.scapy.readthedocs.io · 2 Oct 2026
Packet handling: It can forge or decode packets across many protocols, send them, capture them, and match requests with replies.scapy.net · 2 Oct 2026
Use cases: Scapy supports scanning, tracerouting, probing, unit tests, attacks and network discovery.scapy.readthedocs.io · 2 Oct 2026
Interactive modes: Scapy can be used as an interactive shell or as a library.github.com · 2 Oct 2026
Packet flexibility: Users can set arbitrary field values and stack protocol layers without predetermined templates.scapy.readthedocs.io · 2 Oct 2026
Raw results: After a probe, Scapy returns the full decoded packets before interpretation so users can analyze them in different ways.scapy.readthedocs.io · 2 Oct 2026
Python DSL: Scapy uses Python syntax and interpreter capabilities as a domain-specific language for describing packets.scapy.readthedocs.io · 2 Oct 2026
Platforms: Scapy runs on Linux, macOS, BSD and Windows; Windows installation requires Npcap.scapy.readthedocs.io · 2 Oct 2026
Installation: The latest release can be installed with pip install scapy, and it can also run from the run_scapy or run_scapy.bat scripts without installation.scapy.readthedocs.io · 2 Oct 2026
Optional integrations: Optional features can use Matplotlib, PyX, Graphviz, ImageMagick, VPython-Jupyter and cryptography.scapy.readthedocs.io · 2 Oct 2026
Licensing: Scapy code, tests and tools are licensed under GPL v2, while its documentation is licensed under CC BY-NC-SA 2.5.github.com · 2 Oct 2026
Security support: Critical bugs should be reported privately through GitHub's security tab, and the project supports only the latest Scapy master version.github.com · 2 Oct 2026
Release: Scapy documentation lists release 2.7.1 dated October 1, 2026.scapy.readthedocs.io · 2 Oct 2026
Audience: Scapy is intended for users who need customizable network probing and packet manipulation tools rather than fixed-purpose utilities.scapy.readthedocs.io · 2 Oct 2026