Modbus Slave is described as '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' and is an app in the network & admin category. There are more than 10 alternatives to Modbus Slave for a variety of platforms, including Windows, Linux, Web-based, Flathub and SaaS apps. The best Modbus Slave alternative is ModPackQT, which is free. Other great apps like Modbus Slave are CoreBus, ModSim, ModScan and QModBus.