ComIO.Studio is described as 'RS-232 and RS-485 serial terminal and serial port monitor for macOS, Windows, Linux, with a Modbus RTU decoder and RS-485 sniffer, time-stamped logging, macros, triggers and ESP32, STM32, AVR firmware flashing, plus optional Lua scripting, charts, an AI assistant (BYOK) and an MCP server' and is a terminal emulator in the os & utilities category. There are more than 10 alternatives to ComIO.Studio for a variety of platforms, including Windows, Linux, Flathub, Mac and Flatpak apps. The best ComIO.Studio alternative is RealTerm, which is both free and Open Source. Other great apps like ComIO.Studio are Tera Term, Tauno Monitor, Serial Port Monitor and SerialMon.
RealTerm is a terminal program specially designed for capturing, controlling and debugging binary and other difficult data streams. It is far better for debugging comms than HyperTerminal. It has no support for dialing modems, BBS, etc. - that is what HyperTerminal does.
Tera Term (Pro) is a free software terminal emulator (communication program) for MS-Windows. It supports VT100 emulation, telnet connection, serial port connection, and so on.
A Simple stand-alone serial port monitor for the GNOME desktop. It aims to be beginner friendly, small and easy to use. Not feature-rich and professional. Remembers the last settings (Theme, Baud Rate, Port etc.).
Estonia
EU
Displays, logs, and analyzes serial data from RS232/422/485 ports in real-time, features terminal emulation, customizable interface, advanced configuration, monitoring filters, session save and reload, data format switching, and detailed I/O control code recording.
United States
Monitors RS232 communication thru software or with simple hardware. Protocol analyzer for ABB RP570, ABB SPA-bus and NMEA 0183 protocol.
SwedenEU
Serial Port Communication software ideal for COM communication. Multiplatform utility running on Windows, MacOS and Linux. It is completely free.
This program allows you to check the flow of data through a computer's COM ports. As you can see from software name this application can work as serial port monitor. It supports full duplex mode, flexible adjusting of parameters, output received data to file, automatic and...
Russia
Portmon is a utility that monitors and displays all serial and parallel port activity on a system. It has advanced filtering and search capabilities that make it a powerful tool for exploring the way Windows works, seeing how applications use ports, or tracking down problems in...
United States
Listen32 tap into RS-232 transmit signals for monitoring bi-directional communications between two devices. Two COM ports are used in the listening device, the receive line of each connected to the transmit line of one of the communicating devices.
If you're a firmware developer or an embedded software developer then this tool has been made for you. This modernly designed desktop application serves as a development tool to help view serial data on your COM port.
United Kingdom
This project is a cross-platform serial port assistant. It can run on Windows, Linux, Android, and macOS.
AccessPort is serial port monitoring tool for technicians, engineers and software developers designing or debugging serial port related projects.
