Commy – cross-platform serial monitor

Commy is a cross-platform serial monitor for communicating with tty, UART, and COM port devices.

It runs on Linux, macOS, and Windows, and is designed as a small console utility for working directly with serial connections. The project also incorporates a VT220/xterm/ECMA-48 terminal emulator so terminal behaviour is more consistent across different host terminals.

This is free and open source software.

Key Features

  • Lists available serial ports from the command line.
  • Connects to serial devices using a specified baud rate.
  • Supports logging received device output to a file.
  • Offers optional local echo for devices that do not echo typed characters.
  • Provides configurable parity, word size, stop bits, and flow control.
  • Includes scrollback history that replays terminal screen updates visually.
  • Ships as a single statically linked binary with no additional runtime files required.

Website: github.com/ringtailsoftware/commy
Support:
Developer: Ringtail Software
License: MIT License


Related Software

Terminal-Based Serial Terminals
tioStraightforward TTY I/O with profiles and clean command syntax
minicomMenu-driven comms tool with dialing, scripting, and capture
ComChanFast Rust monitor with plotting, logging, and TUI workflow
picocomMinimal modem tester for low-overhead device console access
CommySmall cross-platform utility for UART, TTY, and COM devices
sstermPython-based console app with easy setup and output formatting
opencuPortable cu-style console for quick Linux device connections

Read our verdict in the software roundup.


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