Modbus Test Utility - Free alternative to Modscan / Modbus Poll / Simply Modbus - Software and Tools - Industrial Automation, PLC Programming, scada & Pid Control System
GitHub - SciFiDryer/ModbusMechanic: Cross platform GUI MODBUS TCP/RTU simulator & gateway. Interprets data types including ascii float and int.
CAS Modbus Scanner - A free tool for communicating with Modbus devices
Download] Modbus Slave V7.3.1 Full Version - plc247.com