What is ComIO.Studio?

A serial terminal at its core, reinforced with purpose-built engineering tools that dramatically simplify complex hardware workflows.

1. Overview — What ComIO.Studio Does

ComIO.Studio is a cross-platform desktop application that serves as an all-in-one workstation for anyone who communicates with hardware over serial ports (UART, RS-232, USB-to-serial).

In one application, you get:

Serial Terminal — connect to any serial device, send/receive data in text or hex, monitor control lines (RTS, DTR, CTS, DSR, DCD, RI)
Data Buffer & Logging — searchable scrollback with timestamps, ASCII / HEX / Modbus RTU / VT100 modes, export to file
MCU Programmer — flash firmware to ESP8266, ESP32, STM32, and AVR chips directly through the serial port (UART) — no external programmers needed
Macros (up to 10) — one-click command shortcuts for frequently used commands
Triggers — automatic responses when specific text patterns are detected in incoming data
Lua Scripting (ProBaud) — full automation engine with serial port API access; can also simulate a device, so triggers and parsers can be exercised without hardware
Measurement Charts (ProBaud) — recordings written by scripts, drawn live, including a 3D waterfall
AI Assistant (BYOK) (ProBaud) — ask questions about your serial data, get protocol decoding, generate Lua scripts for the built-in engine, troubleshoot connections
MCP Server (ProBaud) — connect an outside AI agent to ComIO.Studio's serial tools with permission controls

Items marked (ProBaud) are unlocked by the paid plan — see Pricing & Plans. Everything else is free.

ComIO.Studio runs natively on Linux, Windows, and macOS. It provides direct hardware access and local processing of serial port data.

2. Who Is It For?

Embedded Engineers

Debug UART, flash MCUs, analyze protocols — daily workflow in one tool.

Students & Educators

Learn serial communication with explanations from the AI Assistant (BYOK). No command-line knowledge needed.

Makers & Hobbyists

Arduino, ESP32, Raspberry Pi — connect, send commands, flash firmware, script automation.

Industrial / QA Teams

Communicate with Modbus RTU devices over RS-485 — frequency inverters (VFDs), PLCs, flow meters, temperature controllers, and industrial sensors. Decode frames with the AI Assistant (BYOK), automate test sequences with Lua, and log everything with timestamps.

Independent by Design

ComIO.Studio is an independently developed and maintained professional tool. Its development stays close to real engineering use cases and direct user feedback, with a focus on reliability, clear documentation, and practical functionality.

Ready to try it?
Download → | View pricing plans → | User Guide & Help →