TCP port scanner, spews SYN packets asynchronously, scanning entire Internet in under 5 minutes.

BCC - Tools for BPF-based Linux IO analysis, networking, monitoring, and more

⚡ KCP - A Fast and Reliable ARQ Protocol

Ultralightweight JSON parser in ANSI C

Event notification library

Share your terminal over the web

Cross-platform, C implementation of the IETF QUIC protocol, exposed to C, C++, C# and Rust.

Open Source Deep Packet Inspection Software Toolkit

F-Stack is an user space network development kit with high performance based on DPDK, FreeBSD TCP/IP stack and coroutine API.

the TCPdump network dissector

the LIBpcap interface to various kernel packet capture mechanism

High-speed packet processing framework

Automatically exported from code.google.com/p/netmap

A package for capturing and analyzing network flow data and intraflow data, for network research, forensics, and security monitoring.

TLS Fingerprinting

A netmap-based packet layer for distributing and filtering traffic.

C Library for working with network packet traces

Passive SSL client fingerprinting using handshake analysis.

Pure C natural language identifier with support for 97 languages