AGG Software

Free
Is a utility program that works as an RS232-TCP/IP software converter
Free
COM Port Data Emulator is a tool for emulating a com port or an Ethernet device
Free
Test the behavior of COM, RS232, and RS485 ports
Free
Advanced USB Port Monitor will allow you to display the packets sent
Free
It is a popular tool for writing and studying CNC programs with G codes
Free
Monitor the transferring of data via COM ports
Free
Creates a text message using the specified template and sends a notification