ZMap is a fast single packet network scanner for network surveys
Development toolkit for Web Services and XML data bindings for C & C++
32/64 bit multi-platform Modbus communication library
DNP3 Source code Library for Windows and simulator
DNP3 Outstation and client simulator, Source code Library, win, Linux
Real Time Tcp/Ip Stack Library
Open Source for Internet of Things
Hexadecimal and raw packet injector and sniffer.
Proxies data from stdin/stdout/stderr and logs it in pcap files.