CoolTerm

CoolTerm provides a straightforward interface for communicating with devices over serial ports. It supports basic data exchange without terminal emulation, allowing users to send and receive raw bytes to hardware such as servo controllers, robotic kits, GPS receivers, and microcontrollers. The application is built with Xojo and runs on macOS, with unofficial builds available for Linux and Raspberry Pi platforms.

The tool is aimed at hobbyists and professionals who need a reliable way to interact with serial‑connected equipment. Its simplicity makes it suitable for quick testing, debugging, or routine data logging, while still offering configuration options for baud rate, data bits, parity, and flow control.

CoolTerm is distributed as freeware, with source‑code not provided, and is released under a “as‑is” disclaimer. The latest stable version is 2.4.0, dated May 19 2025, and includes a user guide and checksum verification for downloads.