Modbux

Open-source Modbus client, server and simulator for Windows, macOS and Linux.

Desktopfree

Modbux is an open-source Modbus client and server simulator for Windows, macOS and Linux, supporting Modbus TCP, RTU and RTU-over-TCP, positioned as a free modern alternative to Modbus Poll and QModMaster. It's aimed at industrial automation engineers who need to test and simulate Modbus communication without a paid license.

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Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

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