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.

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

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 library to interact with Modbus servers such as PLCs.

Modbus master and slave implementation in C++

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

Modbus TCP Client/Server

modbus client and server library for kotlin

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

A simple python script to automate the modbus address value enumerations

Modbus TCP implementation based on FreeRTOS and LwIP

Modbus simulator CLI is a high-performance modbus TCP server with customizable simulation. Available as CLI tool or as docker image

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

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

Desktop emulator for logical IO through various protocol of communication

Modbus Server Simulator

Enable seamless bidirectional communication between TRNSYS and multiple PLCs with a communication middleware built on top of TRNSYS Type 3157 and streamline heat pump testing in Hardware-in-the-Loop (HiL) testbeds. Created and maintained as an UCEEB RP2 project.

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

Modbus cross platform C library containing master and slave implementation