← MNX Lab

Licences and notices

Copyright © 2026 Owen Williams.

MNX Lab — including the synth in synth/ — is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License, version 3 only (AGPL-3.0-only), the text in LICENSE.md. It is distributed WITHOUT ANY WARRANTY; see the licence for details.

Commercial licences are available from the copyright holder for uses the AGPL does not suit; contact them through GitHub (github.com/owennewo). The source is at https://github.com/owennewo/mnx-lab.

The AGPL covers all code and content in this repository except the third-party components below, which keep their own licences. Their full licence texts are in the links below (served at /licenses/).

Third-party components

• Lit

  BSD-3-Clause · Copyright (c) 2017 Google LLC

  Reaches people through the website (sent to browsers).

  BSD-3-Clause-Lit.txt

• Trusted Types type definitions

  MIT · Copyright (c) Microsoft Corporation

  Reaches people through type definitions only (not shipped).

• Archivo (typeface)

  OFL-1.1 · Copyright 2020 The Archivo Project Authors

  Reaches people through the website (sent to browsers).

  OFL-1.1-Archivo.txt

• Montserrat (typeface)

  OFL-1.1 · Copyright 2011 The Montserrat Project Authors

  Reaches people through the website (sent to browsers).

  OFL-1.1-Montserrat.txt

• Lora (typeface)

  OFL-1.1 · Copyright 2011 The Lora Project Authors, with Reserved Font Name "Lora"

  Reaches people through the website (sent to browsers).

  OFL-1.1-Lora.txt

• Bravura (SMuFL music font) and its metadata

  OFL-1.1 · Copyright Steinberg Media Technologies GmbH

  Reaches people through the website (sent to browsers).

  OFL-1.1-Bravura.txt

• SMuFL glyph names

  W3C Music Notation Community Group (licence to confirm) · The SMuFL contributors, W3C Music Notation Community Group

  Reaches people through the website (sent to browsers). The upstream repository carries no licence file; the terms are to be confirmed with the Community Group.

• MNX schema and the mirrored specification examples

  W3C Music Notation Community Group (licence to confirm) · The MNX contributors, W3C Music Notation Community Group

  Reaches people through the website (sent to browsers). The upstream repository carries no licence file; the terms are to be confirmed with the Community Group.

• fflate

  MIT · Copyright (c) 2026 Arjun Barrett

  Reaches people through the website (sent to browsers).

  MIT-fflate.txt

• xmldom

  MIT · Copyright 2019 - present Christopher J. Brody and other contributors

  Reaches people through the website (sent to browsers).

  MIT-xmldom.txt

• FAUST libraries (STK-licensed functions by Julius O. Smith III)

  STK-4.3 (MIT-style) · Copyright (C) 2003-2019 Julius O. Smith III

  Reaches people through the synth (/synth/, sent to browsers). Filters (fir, iir, lowpass, tf1, tf2, pole, bandpass, allpass_comb, …) and the zita_rev1 reverb, compiled into the synth’s WebAssembly by FAUST 2.81.10.

  STK-4.3.txt

• FAUST libraries (GRAME)

  LGPL-2.1-or-later WITH the FAUST library exception · Copyright (C) 2003-2016 GRAME, Centre National de Creation Musicale

  Reaches people through the synth (/synth/, sent to browsers). maths.lib, envelopes.lib and the other GRAME library functions compiled into the synth’s WebAssembly; the exception lets the compiled code carry its own licence.

  FAUST-LGPL-exception.txt · LGPL-2.1.txt

• V8 and fdlibm (tanh and expm1 operation sequence)

  BSD-3-Clause (V8) and the fdlibm notice · Copyright the V8 project authors; Copyright (C) 1993-2004 Sun Microsystems, Inc.

  Reaches people through the synth (/synth/, sent to browsers). Ported to WebAssembly for the synth’s math kernel.

  V8-LICENSE.txt · fdlibm-LICENSE.txt

• Hono

  MIT · Copyright (c) 2021 - present, Yusuke Wada and Hono contributors

  Reaches people through the server (the Cloudflare Worker; not sent to browsers).

  MIT-Hono.txt

• jose

  MIT · Copyright (c) 2018 Filip Skokan

  Reaches people through the server (the Cloudflare Worker; not sent to browsers).

  MIT-jose.txt

• Guitar samples (listening bench data): Electric Guitar FSBS (clean)

  CC0-1.0 · Dedicated to the public domain

  Reaches people through the repository only (development; not deployed).

  CC0-1.0.txt

• Guitar samples (listening bench data): GM Acoustic Guitar

  CC0-1.0 · Dedicated to the public domain

  Reaches people through the repository only (development; not deployed).

  CC0-1.0.txt

• Guitar samples (listening bench data): Shiny Guitar

  CC0-1.0 · Dedicated to the public domain

  Reaches people through the repository only (development; not deployed).

  CC0-1.0.txt

• Guitar samples (listening bench data): Spanish classical guitar

  CC0-1.0 · Dedicated to the public domain

  Reaches people through the repository only (development; not deployed).

  CC0-1.0.txt

• MusicXML test suite

  MIT · The W3C Music Notation Community Group contributors

  Reaches people through the repository only (development; not deployed). Its licence is kept verbatim beside the files.

• MNX specification sources (git submodule)

  W3C Music Notation Community Group (licence to confirm) · The MNX contributors, W3C Music Notation Community Group

  Reaches people through the repository only (development; not deployed).