Download RealTerm 3.0 – Serial and TCP Terminal for Engineers

RealTerm 3.0 is a powerful serial and TCP terminal program designed for engineers, embedded developers, and hardware hackers who need to capture, display, and send binary and other difficult data streams. Unlike simple serial monitors, RealTerm provides advanced display modes including hex, binary, ASCII, and float representations, making it ideal for debugging embedded systems and serial communication protocols.

The software supports RS-232, RS-485, and TCP/IP connections and can display incoming data in multiple formats simultaneously. Its capture-to-file feature allows you to log serial data directly to disk for later analysis, while its scripting support enables automated testing and data exchange workflows.

RealTerm is freely available and widely used in the embedded systems and electronics communities for tasks such as debugging UART communication, testing AT command modems, and monitoring industrial serial devices. It is one of the most trusted tools for working with raw serial data on Windows.

Key Features

• Advanced display modes including hexadecimal, binary, ASCII, decimal, and float views.
• Supports RS-232, RS-485, and TCP/IP serial connections.
• Data capture to file for logging serial streams for offline analysis.
• Send data as text, hex strings, binary files, or from scripted sequences.
• Multiple simultaneous display panes for viewing data in different formats at once.
• Scripting support via ActiveX for automating serial communication workflows.
• Free and open-source, widely trusted in embedded systems and electronics communities.

How to Install

1. Download the RealTerm 3.0 installer from the link provided below.
2. Run the setup file and follow the on-screen installation instructions.
3. Launch RealTerm and go to the Port tab to select your COM port and baud rate.
4. Click Open to establish the serial connection and begin receiving data.
5. Use the Send tab to transmit data and the Capture tab to log incoming streams to a file.