Listen32 is described as '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' and is an app. There are more than 10 alternatives to Listen32 for a variety of platforms, including Windows, Linux, Mac, Flathub and Flatpak apps. The best Listen32 alternative is RealTerm, which is both free and Open Source. Other great apps like Listen32 are Tauno Monitor, CoolTerm, YAT - Yet Another Terminal 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.
RealTerm is the most popular Windows alternative to Listen32.
RealTerm is the most popular Open Source & free alternative to Listen32.
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.).
Tauno Monitor is the most popular Linux alternative to Listen32.
CoolTerm is a simple serial port terminal application (no terminal emulation) that is 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.
CoolTerm is the most popular Mac alternative to Listen32.
Engineering, testing and debugging of serial communication. Supports RS-232/422/423/485 as well as TCP/IP Client/Server/AutoSocket, UDP/IP Client/Server/PairSocket and USB Ser/HID. Optimized for simple command sets of e.g. embedded systems.
Monitors RS232 communication thru software or with simple hardware. Protocol analyzer for ABB RP570, ABB SPA-bus and NMEA 0183 protocol.
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.
Serial Port Monitor is the most popular commercial alternative to Listen32.
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...
QuteSerial is a RS232 terminal in the veins of minicom, hyperterminal, and br@y's Terminal.exe. It allows you to access a old-fashioned RS232 (serial) port and display the received data in either a Hex or ASCII format.
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.
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...
AccessPort is serial port monitoring tool for technicians, engineers and software developers designing or debugging serial port related projects.
A lightweight macOS status bar app that monitors and manages development processes running on ports 2000-6000. The app provides real-time process detection and allows you to kill individual processes or all processes at once.
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