Serial Port Monitor - The tool to test, log and analyze serial port data - RS232 sniffer software.
RealTerm - RealTerm is a terminal program specially designed for capturing, controlling and debugging binary...
YAT - Yet Another Terminal - Engineering, testing and debugging of serial communication.
Tera Term - Tera Term (Pro) is a free software terminal emulator (communication program) for MS-Windows.
HTerm - HTerm is a terminal emulator for serial communication.
CuteCom - Features: easy to use GUI no cryptic keyboard shortcuts