Software Licenses

Certain Microsys products include open-source software components. In accordance with the terms of the applicable licenses, the components used are listed below, together with their copyright holders, license type, source repository, and full license text.

All other software and hardware of this product is proprietary to Microsys.

For components licensed under the GNU LGPL or GPL, please also see the Written Offer section at the bottom of this page.

Microsys gratefully acknowledges these and other contributions to our products.

The following paragraphs list parts (modules) of our products that incorporate code licensed under third-party open-source licenses

Open Source and other third-party licensed components

Certain Microsys products include open-source software components. In accordance with the terms of the applicable licenses, the components used are listed below per product, together with their copyright holders, license type, source repository, and full license text. All other software and hardware of these products is proprietary to Microsys or licensed from third parties under their own terms.

For components licensed under the GNU LGPL or GPL, please also see the "Written Offer" section at the bottom of this page.

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1 / Microsys Light Control

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Wire

Function: I²C / TWI communication (Arduino AVR core)

License: LGPL-2.1-or-later

Source repository: https://github.com/arduino/ArduinoCore-avr/tree/master/libraries/Wire

License text: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.html

SPI

Function: SPI communication (Arduino AVR core)

License: LGPL-2.1-or-later

Source repository: https://github.com/arduino/ArduinoCore-avr/tree/master/libraries/SPI

License text: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.html

Function: SD card file access

License: GPL-3.0

Source repository: https://github.com/arduino-libraries/SD

License text: https://www.micro-sys.com/gpl-3-0

AudioZero

Function: WAV audio playback (Arduino Zero / MKR)

License: GPL-2.0 or LGPL-2.1 (dual-licensed); used under LGPL-2.1

Source repository: https://github.com/arduino-libraries/AudioZero

License text: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.html

ModbusRTUSlave

Function: Modbus RTU slave / server implementation

License: MIT

Source repository: https://github.com/CMB27/ModbusRTUSlave

License text: https://opensource.org/license/mit

ModbusRTUMaster

Function: Modbus RTU master / client implementation

License: MIT

Source repository: https://github.com/CMB27/ModbusRTUMaster

License text: https://opensource.org/license/mit

Adafruit SleepyDog

Function: Watchdog timer & low-power sleep

License: MIT

Source repository: https://github.com/adafruit/Adafruit_SleepyDog

License text: https://opensource.org/license/mit

MemoryFree

Function: Runtime free-RAM measurement

License: License not formally specified — see note below

Source repository: https://github.com/McNeight/MemoryFree

License text: —

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2 / Microsys SUREFIRE6 and POWERPLAY6

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(Shared .NET / WPF desktop components. See note below if a component

applies to only one of the two products.)

FFmpeg

Function: Audio/video processing

License: LGPL-2.1-or-later (non-GPL build; see note)

Source repository: https://github.com/FFmpeg/FFmpeg

License text: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.html

MahApps.Metro

Function: WPF UI framework

License: MIT

Source repository: https://github.com/MahApps/MahApps.Metro

License text: https://opensource.org/license/mit

MahApps.Metro.IconPacks

Function: WPF/UWP icon packs

License: MIT

Source repository: https://github.com/MahApps/MahApps.Metro.IconPacks

License text: https://opensource.org/license/mit

MongoDB.Driver

Function: MongoDB database access (client driver)

License: Apache-2.0

Source repository: https://github.com/mongodb/mongo-csharp-driver

License text: https://www.apache.org/licenses/LICENSE-2.0

NLog

Function: Logging

License: BSD-3-Clause

Source repository: https://github.com/NLog/NLog

License text: https://opensource.org/license/bsd-3-clause

NModbus4

Function: Modbus protocol (C# implementation)

License: MIT

Source repository: https://github.com/NModbus4/NModbus4

License text: https://opensource.org/license/mit

Prism

Function: MVVM / dependency injection / composition (WPF)

License: Prism, see https://cdn.prismlibrary.com/downloads/prism_license.pdf

Source repository: https://github.com/PrismLibrary/Prism

License text: https://cdn.prismlibrary.com/downloads/prism_license.pdf

SharpAvi

Function: AVI file creation

License: MIT

Source repository: https://github.com/baSSiLL/SharpAvi

License text: https://opensource.org/license/mit

System.Windows.Interactivity

Function: WPF behaviors / triggers

License: Ms-PL (Microsoft Public License)

Source repository: https://www.nuget.org/packages/System.Windows.Interactivity.WPF

License text: https://opensource.org/license/ms-pl-html

Unity.Container / Unity.Abstractions

Function: Dependency injection

License: Apache-2.0

Source repository: https://github.com/unitycontainer/unity

License text: https://www.apache.org/licenses/LICENSE-2.0

WmiLight

Function: WMI access (.NET)

License: MIT

Source repository: https://github.com/MartinKuschnik/WmiLight

License text: https://opensource.org/license/mit

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Notes

AudioZero is offered by its author under a choice of GPL-2.0 or LGPL-2.1. Microsys uses it under the terms of the LGPL-2.1.

MemoryFree: the linked repository contains no license file and its source files carry no license header. It derives from the community "AvailableMemory" code historically distributed under an informal ("Beerware") notice. Microsys is clarifying the licensing status of this component.

FFmpeg is used as an LGPL-2.1 build; the distributed binaries are configured without GPL-only components. FFmpeg contains optional parts under other licenses depending on build configuration.

Apache-2.0 components (MongoDB.Driver, Unity): the Apache License 2.0 text and any accompanying NOTICE file are reproduced/retained in accordance with that license.

SUREFIRE6 / POWERPLAY6: the components in this section are shared across both products. Where a component is used in only one of the two products, that will be indicated.

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Written Offer (source code and relinking)

For the components licensed under the GNU LGPL (Wire, SPI, AudioZero, and FFmpeg if applicable), Microsys will, on request, provide the object files and/or the corresponding library source required to modify those libraries and relink them with the product, as required by the LGPL.

For the component licensed under the GNU GPL-3.0 (SD), Microsys will, on request, provide the complete corresponding source code of the covered work as required by that license.

To request source code or relinkable object files, contact: sales.micro-sys.eu@capgemini.com. This offer is valid as required by the applicable licenses.

For the MIT-, BSD-, Apache-2.0-, and Ms-PL-licensed components, the copyright and permission/attribution notices above are reproduced in accordance with the applicable licenses; the full license texts are available at the links provided.

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The licenses are also part of the product documentation and can be found here:

Last updated: 07/01/2026