SkydiveAn open source real-time network topology and protocols analyzer
ScapyScapy: the Python-based interactive packet manipulation program & library. Supports Python 2 & Python 3.
NetStalkerA network tool to control the bandwidth over your local network.
arp-dns-attacksARP spoofing, HTTP redirection, DNS spoofing and DNS forging using pcap library
xpcapCross-platform Packet Capture which supports Linux and macOS(BSD) in 1000 LOC without depending on libpcap.
SWSniffA SoulWorker packet sniffer+injector
rvi capturervictl for Linux and Windows: capture packets sent/received by iOS devices
JxnetJxnet is a Java library for capturing and sending custom network packet buffers with no copies. Jxnet wraps a native packet capture library (libpcap/winpcap/npcap) via JNI (Java Native Interface).