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Free Download 18.6 MB - Tested clean
Screenshot of CoolTerm 1.8, a serial port terminal app for the Windows operating system.
Free Freeware
Roger Meier
Windows 10 / 8 / 7 / Vista / XP
Oct 14, 2020
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CoolTerm is a freeware serial port terminal software app 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.

If you would like to submit a review of this software download, we welcome your input and encourage you to submit us something!

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)
  • Hardware (CTS, DTR) and software flow control (XON)
  • Optical line status indicators
  • Capability of manually toggling RTS and DTR signals when hardware flow control is disabled
  • Capability of loading and saving connection options

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 10 PCs but also without a hitch on Windows 7 and Windows 8.

Compatibility with this serial port terminal software may vary, but will generally run fine under Microsoft Windows 10, Windows 8, Windows 8.1, Windows 7, Windows Vista and Windows XP on either a 32-bit or 64-bit setup. A separate x64 version may be available from Roger Meier.

Filed under:
  1. CoolTerm Download
  2. Freeware Network Software
  3. Major release: CoolTerm 1.8
  4. Serial Port Terminal Software
CoolTerm has been picked by our editors as very good.
CoolTerm has been tested for viruses and malware.
We have tested CoolTerm against malware with several different programs. We certify that this program is clean of viruses, malware and trojans.

Screenshots of CoolTerm (8)

Ranking in
Networking Software
#2 of 178
4.5 out of 5 based on 31 ratings.

Download Details

System Architecture:
Windows 10 32-bit, Windows 10 64-bit, Windows 8 32-bit, Windows 8 64-bit, Windows 7 32-bit, Windows 7 64-bit
Size on disk:
19,506,077 B
SHA256 filehash:
MD5 filehash: