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NetXMS - Open Source network and infrastructure monitoring and management

ModbusScope logs data for analysis using the Modbus protocol.

Qt-SerialPort-HID-BLE-UDP-TCP-WebSocket-Modbus-CANBus-MQTT debugging tool, which support custom lua, javascript, chart view and data transmitting...

A library to implement the master/client portion of the Modbus RTU protocol on Arduino

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

A library to manage Modbus RTU communication on Arduino

Open ModScan is a Free Modbus Master (Client) Utility

Modbus devices polling service

ESPHome Modbus TCP↔RTU Bridge – Transparent bridge for ESP8266/ESP32 that lets multiple Modbus TCP clients communicate with RTU slaves over UART/RS485.

Wiren Board MQTT serial protocol driver

Open ModSim is a Free Modbus Slave (Server) Utility

ESPHome component to monitor a Seplos Battery Management System (Seplos-BMS) via UART, RS485 or BLE

ModbusLib is a free, open-source Modbus library written in C++.

A digital show control app written in c++ and qml, enables signal mapping between MIDI, DMX, OSC, ArtNet, Modbus, Arduino, Philips Hue and more digital device interfaces.

Modbus to WiFi dev

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

pmbridge (Programmable Modbus Bridge) is a cross-platform (Windows, Linux) Modbus gateway application (TCP, RTU, ASC).

nymea plug-ins that make use of QtSerialBus

General software for logging and controlling devices. Controlling Modbus, CAN bus via STM32PLC etc