Proudly introducing the Packet Viewer (and Manipulator), a Wireshark-like protocol sniffer and decoder with live packet manipulation, sending and replaying capabilities. Before diving in, let’s recap some basics first. If you’re familiar with Scapy, feel free to skip to “A TUI for Scapy” right away. Short introduction to Scapy Scapy is a framework for network packet manipulation. It is written in Python and supports Python 2 (still) and 3. It is very flexible and can not only be used to receive packets but also to send packets.