
Description: Modbus Poll is an open-source software tool for testing and debugging Modbus slave devices. It can poll Modbus devices via serial port, TCP, and UDP connections, read and write data, and log traffic. Useful for factory testing, diagnostics, device simulation, SCADA development, etc.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: CAS Modbus Scanner is an open-source Modbus master simulator and test utility for validating Modbus slave devices and networks. It allows interrogating, testing and simulating Modbus devices over serial line, TCP/IP, and UDP connections.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API