From Darkwood Studio:
Serial Port Utility is a professional communication software for serial port. Serialport Utility makes it more efficient for development of hardware-software application. It will boost the speed to design, development, debug and test applications and hardware devices, such as relay boards, Electronic Total Station, Global Positioning System, chemical and medical analysis instruments and DMX devices. It can send and receive data in high speed. Data can be viewed in Text, Hex and decimal format. It's also able to create complex structure data, like ZigBee/XBee API data framework or GIS Garmin data package. All data are stored in lists which can be accessed easily from GUI. Data can be sent automatically with flexible auto sending rules.