evcc is an energy management system with a focus on electromobility. The software controls your EV charger or smart plug. It communicates with your vehicle, inverter or home storage to make intelligent charging decisions. The software is open source and community-driven.
Cost / License
- Free
- Open Source (MIT)
Platforms
- Mac
- Windows
- Linux
- Android
- Self-Hosted
- F-Droid
- Raspberry Pi
- Docker
- Cloudron
ModbusScope is a graphical user interface tool designed for logging data using the Modbus protocol. It enables users to visualize the data in graphs while logging continues, and supports exporting the data to a CSV file for later analysis.
Cost / License
- Free
- Open Source (GPL-3.0)
Platforms
- Windows
- Linux


QModBus is a free Qt-based implementation of a ModBus master application. A graphical user interface allows easy communication with ModBus slaves over serial line interface. QModBus also includes a bus monitor for examining all traffic on the bus.
Cost / License
- Free
- Open Source (GPL-2.0)
Platforms
- Windows
- Linux

EVA ICS is a platform for automated control and monitoring systems development, for any needs, from home/office to industrial setups. It is completely free for non-commercial use as well as for commercial, on condition that enterprise integrates it on its own.
Cost / License
- Free
- Open Source
Platforms
- Mac
- Linux
- Self-Hosted


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A complete Modbus Master and Slave simulator in your browser. Read, write, and simulate registers with RTU serial and TCP/IP support. Parse datasheets with AI. Visualize data in real time.
Cost / License
- Freemium
- Proprietary
Platforms
- Online
- Software as a Service (SaaS)



Field ConneXion is an industrial automation tool that connects Microsoft Excel directly to PLCs and field devices without requiring custom programming. It allows engineers and technicians to read, write, and monitor PLC data straight from Excel spreadsheets, making...
Cost / License
- Paid
- Proprietary
Platforms
- Windows


A lightweight and user-friendly Modbus RTU sniffer tool with a graphical interface. Easily analyze and debug communication between PLCs, HMIs, and other Modbus RTU devices via serial ports.
Cost / License
- Free
- Proprietary
Platforms
- Windows
- Linux
- Python

A clean, easy-to-use Modbus master tool that lets you connect to any slave device and inspect traffic in seconds — over TCP/IP, Serial, RTU or ASCII.
Cost / License
- Freemium
- Proprietary
Platforms
- Windows


QModMaster is a free Qt-based implementation of a ModBus master application. A graphical user interface allows easy communication with ModBus RTU and TCP slaves. QModMaster also includes a bus monitor for examining all traffic on the bus.
Cost / License
- Free
- Open Source
Platforms
- Windows
- Linux


+1
Modbus Simulator for RS-232 and TCP/IP. Fork of mod_RSsim (https://sourceforge.net/projects/modrssim).
Features Modbus TCP/IP protocol slaves Modbus RTU protocol slaves Scriptable test environment Requires Visual C++ Redistributable 2010
Cost / License
- Free
- Open Source
Platforms
- Windows


+3
Use SimServe to simulate a sophisticated Modbus network with different gateways and a mix of Modbus protocol variants
Cost / License
- Paid
- Proprietary
Platforms
- Windows


Cost / License
- Free
- Open Source (GPL-3.0)
Platforms
- Linux
- Flathub
- Flatpak


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