Scapy is a Python-based interactive packet manipulation program
VoIP SIP and SKINNY quality analyzer and packet / audio recording tool
A Network Packet Sniffing tool developed in Python 3
A network tool to control the bandwidth over your local network
Xplico is a Network Forensic Analysis Tool (NFAT)
A java packet sniffer and forger that wraps pcap libs.
Simple Multi Protocol Packet Sniffer - SMPPS