Screenshot of CoolTerm 1.9, a serial port terminal app for the Windows operating system.
Free Freeware
Roger Meier
Windows 10 8 7
PC Type:
32-bit, 64-bit · x86_x64
Nov 23, 2021
Version: (download)


CoolTerm is a freeware serial port terminal software download filed under network software and made available by Roger Meier for Windows.

The review for CoolTerm has not been completed yet, but it was tested by an editor here on a PC and a list of features has been compiled; see below.

Exchange text and other data between connected serial ports

CoolTerm was developed as a useful and user-friendly software and acts as a serial port terminal application.

CoolTerm is a tool that's geared towards hobbyists and professionals with a need to exchange data with hardware connected to serial ports such as servo controllers, robotic kits, GPS receivers, microcontrollers etc.

Features and highlights

  • Capability of multiple concurrent connections if multiple serial ports are available
  • Display of received data in textual or hexadecimal format
  • Sending data via keypresses as well as a "Send String" dialog that support data entry in textual or hexadecimal format
  • Sending data via pasting of text into the terminal window
  • Sending of text files
  • Capability of recording received data to text files
  • Local echoing of transmitted data
  • Local echoing of received data (loop back to sender)

CoolTerm on 32-bit and 64-bit PCs

This download is licensed as freeware for the Windows (32-bit and 64-bit) operating system on a laptop or desktop PC from network software without restrictions. CoolTerm is available to all software users as a free download for Windows.