Scapy

Scapy is a powerful Python-based interactive packet manipulation tool that enables users to forge, decode, send, and sniff network packets. It supports a wide array of protocols and can function as an interactive shell (REPL) or as a library within Python scripts. Scapy runs on Linux, macOS, most Unix-like systems, and Windows (requiring Npcap). The current version is 2.7.0, and it maintains an active release cadence.