ModbusLib are cross-platform (Windows, Linux) C++ library (client/server) that supports TCP, UDP, RTU, ASCII, RTU/ASCII over TCP/UDP Modbus protocol types.

A modbus server example implemented by libmodbus. It can serve for multi clients and is very easy to use for everyone.

Software-based PLC designed for educational use

Non blocking tcp and modbus sockets

A simple ros driver for DM245M stepper motor driver

Haxe-bindings for library libmodbus