| ModbusADU | This is a library for managing Modbus RTU and TCP appication data units (ADUs). |
| ModbusRTUComm | This library provides some core functions for implementing Modbus RTU communication. |
| ModbusRTUMaster | This is an Arduino library that implements the master/client logic of the Modbus RTU protocol. |
| ModbusRTUSlave | This is an Arduino library that implements the slave/server logic of the Modbus RTU protocol. |
| ModbusSlaveLogic | This is an Arduino library for processing Modbus requests. |
| ModbusTCPComm | This library provides some core functions for implementing Modbus TCP communication. |
| ModbusTCPSlave | This is an Arduino library that implements the slave/server logic of the Modbus TCP protocol. |
| QwiicUART Library | An Arduino library to utilize the NXP SC16IS741 as a hardware serial port controlled via I2C. |