Most complete Modbus library for Arduino. A library that allows your Arduino board to communicate via Modbus protocol, acting as a master, slave or both. Supports network transport (Modbus TCP) and Serial line/RS-485 (Modbus RTU). Supports Modbus TCP Security for ESP8266/ESP32.

Modbus TCP client library to interact with Modbus servers such as PLCs.

This is an Arduino library that implements the slave/server logic of the Modbus RTU protocol.

Modbus master and slave implementation in C++

Open ModSim is a Free Modbus Slave (Server) Utility

ModbusTools are cross-platform (Windows, Linux) Modbus simulator tools (client and server) with GUI to work with Modbus protocol (TCP,RTU,ASCII)

Modbus TCP Client/Server

A basic Modbus TCP Master example written in C++ on the ESP32 hardware using the CAS Modbus Stack

A basic Modbus RTU Slave example written in CSharp using the CAS Modbus Stack

Desktop emulator for logical IO through various protocol of communication

Modbus slave library for ESP8266-Arduino

Modbus Server Simulator

Firmware for Gosund SP1, Sonoff S26 (R2) and Maxcio W-DE004 smart plugs

A simple modbus slave

A simple python script to automate the modbus address value enumerations

Async modbus server for esp

MODBUS协议,支持RTU、ASCII、TCP三种方式进行通信，自动离线保存服务端数据

Modbus TCP/IP server that translates incoming requests to RTU and relays them to configured serial device.

Modbus cross platform C library containing master and slave implementation