SHM Modbus Alternatives

SHM Modbus is described as 'A collection of applications to simulate a Modbus client' and is an app. There are eight alternatives to SHM Modbus for Windows and Linux. The best SHM Modbus alternative is CoreBus, which is both free and Open Source. Other great apps like SHM Modbus are ModSim, ModScan, QModBus and Modbus Poll.

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SHM Modbus alternatives page was last updated Oct 27, 2025

CoreBus
2 likes
CoreBus is a cross—platform terminal for working with COM ports and TCP sockets with support for Modbus TCP/RTU/ASCII protocols.
Cost / License
Free
Open Source (GPL-3.0)
Origin
Russia
Platforms
Windows
Linux
+3
Is CoreBus a good alternative to SHM Modbus?
CoreBus is the most popular Windows & Linux alternative to SHM Modbus.
CoreBus is the most popular Open Source & free alternative to SHM Modbus.
CoreBus is Free and Open SourceSHM Modbus is also Free and Open Source
ModSim
1 like
ModSim32 is a very simple but powerful application for simulating data from modbus slave devices. ModSim is an MDI application which allows you to define multiple blocks of data points which may then be accessed from a connected modbus master.
Cost / License
Paid
Proprietary
Origin
United States
Platforms
Windows
Is ModSim a good alternative to SHM Modbus?
ModSim is the most popular commercial alternative to SHM Modbus.
ModSim is Paid and ProprietarySHM Modbus is Free and Open Source
ModScan
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ModScan is for use in development or maintenance of multi-vendor systems utilizing the popular PLC communications protocol as developed by Gould Modicon. It allows the PC to operate as a MODBUS master device, polling a connected slave for data.
9 ModScan alternatives
Cost / License
Paid
Proprietary
Origin
United States
Platforms
Windows
Is ModScan a good alternative to SHM Modbus?
QModBus
1 like
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.
9 QModBus alternatives
Cost / License
Free
Open Source (GPL-2.0)
Platforms
Windows
Linux
Is QModBus a good alternative to SHM Modbus?
Modbus Poll
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Modbus Poll is a Modbus master simulator designed primarily to help developers of Modbus slave devices or others that want to test and simulate the Modbus protocol. With the multiple document interface you can monitor several Modbus slaves and/or data areas at the same time.
9 Modbus Poll alternatives
Cost / License
Paid
Proprietary
Origin
Denmark
EU
Platforms
Windows
Is Modbus Poll a good alternative to SHM Modbus?
Modbus Slave
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Modbus Slave is for simulating up to 32 slave devices in 32 windows!. Speed up your PLC programming with this simulating tools. Start programming and test before you receive your slave device from supplier.
9 Modbus Slave alternatives
Cost / License
Paid
Proprietary
Origin
Denmark
EU
Platforms
Windows
Is Modbus Slave a good alternative to SHM Modbus?
QModMaster
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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.
8 QModMaster alternatives
Cost / License
Free
Open Source
Platforms
Windows
Linux
+1
Is QModMaster a good alternative to SHM Modbus?
CAS Modbus Scanner
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CAS Modbus Scanner is a utility to retrieve coils, inputs, holding registers, and input registers from a Modbus enabled device.
Cost / License
Free
Proprietary
Origin
Canada
Platforms
Windows
Is CAS Modbus Scanner a good alternative to SHM Modbus?