Serial Studio 4.2.1

Visualize embedded device data

filecart Linux Updated Oct 29, 2026
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About Serial Studio

Serial Studio lets you visualize real-time data from microcontrollers and connected devices. It's ideal for monitoring sensor output, debugging hardware, and analyzing telemetry from sources like serial ports, Bluetooth Low Energy (BLE), and TCP/UDP.

Whether you're a student, hobbyist, or engineer, Serial Studio gives you insight into what your hardware is doing, live.

• Cross-platform: Native support for Windows, macOS, and Linux

• CSV export: Save incoming data for offline analysis

• Multiple inputs: Serial, BLE, TCP/UDP (MQTT available in Pro version)

• Custom dashboards: Design interfaces with visual widgets using the Project Editor

• Advanced decoding: Use JavaScript to parse structured or binary data streams

Note: This Flatpak package includes the open-source GPLv3 version of Serial Studio only. Commercial features such as MQTT integration, 3D plotting, CANBus/Modbus and XY plots are not included.

License: GPL-3.0-only
Release info Update on Oct 28, 2026
Release notes ? Important Notices
o Intel Macs: Every 4.x release before this one aborted at launch on Intel Macs (#392). The Intel half of the universal binary shipped still pointing at the build machine's Qt, while the Apple Silicon half, the signature and the notarization were all fine. 4.2.1 is the first 4.x build that runs on Intel; if you are on an Intel Mac, upgrade to this version. Thanks @nsby494 for the crash log, which pointed straight at the cause.
o Windows Smart App Control: On newer Windows machines, Smart App Control may prevent Serial Studio from running because the binaries are not code-signed yet. Either install from the Microsoft Store, or turn off Smart App Control (Windows Security -> App & browser control -> Smart App Control settings).
o macOS: The minimum supported version is macOS 14.0 (Sonoma).
o Linux: AppImage/.deb/.rpm builds contain bundled glibc dependencies, which makes them available for older distributions too (RHEL 8 / Debian 10 era).
o No more first-run trial wall: The app always starts in the free tier. The 14-day Pro trial starts the first time you use a Pro feature, and when it ends the app falls back to the free tier instead of blocking you.
o API consent: API clients (TCP, gRPC, MCP) need your consent before they install script code, load a project with scripts, write to a device, start a program or, new in this release, click and type in the window. Consent lasts for the current session only and the prompt names the command asking for it. For headless or CI runs, start the app with SERIAL_STUDIO_API_AUTO_CONSENT=1 to grant every prompt.
o Sounds are off by default: Aural alerts and UI sounds start disabled. Turn them on in Preferences -> Sounds.

New Features
o UI automation API: Six commands under ui.automation.* let an API client observe and operate the real window: listWindows, listElements, click, key, screenshot and setReduceMotion. Controls are addressed by stable names that 93 QML files now carry, so a test or an assistant can...
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