Comm Operator Pal: Serial & TCP/UDP Debug Tool

Comm Operator Pal is a free tool to test and debug device or application that communicated with RS232, TCP/IP or UDP.

**FREE DOWNLOAD (v1.4.0.117)** File Size: 961KB | Safe & Verified

Utility Security Freeware

Key Features

Comm Operator Pal is a free tool to test and debug device or application that communicated with RS232, TCP/IP or UDP.
It supports data in Text, Decimal and Hex format.
Data can be sent in list automatically.
Single data can be sent repeatedly.
It has built in check-sum calculator.

Technical Specifications

**Publisher:** https://www.serialporttool.com/CommPalInfo.htm
**License:** Freeware
**Operating System:** Windows 7, Windows 8, Windows 10, Windows 11
**Last Updated:** October 15, 2025
**Category:** Programming / Debugging Tools

User Rating

Based on 429 reviews.