QModBus 0.2.1 was available to download from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. QModBus lies within Development Tools, more precisely IDE. The most popular versions of the QModBus 0.2 and 0.1.
This free software is an intellectual property of Electronic Design Chemnitz GmbH. We recommend checking the downloaded files with any free antivirus. Qmodbus.exe is the default file name to indicate the QModBus installer. This free PC software is developed for Windows XP/Vista/7/8/10/11 environment, 32-bit version.
From the developer:
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. QModBus originally has been developed by Electronic Design Chemnitz GmbH and now is publicly available under the terms of the GPLv2.
You may want to check out more software, such as Aqua Data Studio, KiXforms or wxPython unicode for Python, which might be related to QModBus.