Last Updated: October 3, 2026
SkyMate and SkyMate Control include, download, or rely on software, AI models, voices, and data created by third parties. This page credits those works and identifies the license each one is provided under.
Component, rights-holder, and license names are shown in their original form. The third-party licenses apply only to the listed components, not to SkyMate or SkyMate Control themselves, which remain subject to our Terms and Conditions and End User License Agreement.
Components bundled with the SkyMate desktop application, its Microsoft Flight Simulator panel, and its X-Plane plugin, or downloaded by the application on first use.
eSpeak NG (GPLv3). SkyMate bundles unmodified eSpeak NG binaries and data as distributed with Piper and KokoroSharp, used for phonemization. The corresponding source code is available at https://github.com/espeak-ng/espeak-ng.
Voice models. Kokoro voices and the optional German Piper voices are used unmodified. Piper voices are downloaded from the Piper project (rhasspy/piper-voices) when you select them. No endorsement by the licensors is implied.
Wikipedia content. Points of interest, mission descriptions, and some aircraft reference data are drawn from Wikipedia. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; images remain under the licenses stated on their Wikimedia pages. Each mission links to its source article.
Map data. Map tiles are © OpenStreetMap contributors and are available under the Open Database License.
SimConnect. The SimConnect client library is part of the Microsoft Flight Simulator SDK and is redistributed under the SDK license terms for use by add-ons.
| Component | Copyright / source | License |
|---|---|---|
| Qwen2.5-1.5B-Instruct | Alibaba Cloud | Apache-2.0 |
| LLamaSharp | SciSharp STACK | MIT |
| llama.cpp | The ggml authors | MIT |
| Whisper | OpenAI | MIT |
| whisper.cpp | The ggml authors | MIT |
| Whisper.net | Sandro Hanea | MIT |
| Silero VAD | Silero Team | MIT |
| ONNX Runtime | Microsoft Corporation | MIT |
| OpenVINO Runtime | Intel Corporation | Apache-2.0 |
| oneTBB | Intel Corporation | Apache-2.0 |
| Vulkan Loader | The Khronos Group Inc. | Apache-2.0 |
| RNNoise | Xiph.Org Foundation, Mozilla, Jean-Marc Valin | BSD-3-Clause |
| Component | Copyright / source | License |
|---|---|---|
| Kokoro-82M (model and voices) | hexgrad | Apache-2.0 |
| KokoroSharp | Lyrcaxis | MIT |
| Piper | Michael Hansen | MIT |
| eSpeak NG | eSpeak NG contributors | GPL-3.0-or-later |
| piper-phonemize | Michael Hansen | MIT |
| libtashkeel | Mush42 | MIT |
| Component | Copyright / source | License |
|---|---|---|
| de_DE-thorsten | Thorsten Müller (Thorsten-Voice) | CC0-1.0 |
| de_DE-kerstin | Kerstin voice dataset contributors | CC0-1.0 |
| de_DE-eva_k, de_DE-karlsson, de_DE-ramona | Munich Artificial Intelligence Laboratories GmbH (M-AILABS Speech Dataset) | M-AILABS license |
| de_DE-pavoque | PAVOQUE corpus (MaryTTS / DFKI) | CC BY-NC-SA 4.0 |
| Component | Copyright / source | License |
|---|---|---|
| .NET Runtime & ASP.NET Core | .NET Foundation and Contributors | MIT |
| Entity Framework Core | .NET Foundation and Contributors | MIT |
| SQLitePCLRaw | SourceGear, LLC | Apache-2.0 |
| SQLite | SQLite authors | Public domain |
| Serilog | Serilog Contributors | Apache-2.0 |
| CsvHelper | Josh Close | MS-PL / Apache-2.0 |
| NAudio | Mark Heath & Contributors | MIT |
| NetTopologySuite | NetTopologySuite Team | BSD-3-Clause |
| NetTopologySuite.IO.Esri | NetTopologySuite Team | BSD-3-Clause |
| Open XML SDK | Microsoft Corporation | MIT |
| PdfPig | UglyToad and PdfPig contributors | Apache-2.0 |
| NumSharp | SciSharp STACK | Apache-2.0 |
| OpenTK | The Open Toolkit contributors | MIT |
| .NET Community Toolkit | .NET Foundation and Contributors | MIT |
| Component | Copyright / source | License |
|---|---|---|
| Electron | OpenJS Foundation and Electron contributors | MIT |
| Chromium | The Chromium Authors | BSD-3-Clause and others |
| React | Meta Platforms, Inc. and affiliates | MIT |
| React Router | Remix Software Inc. | MIT |
| SignalR JavaScript client | .NET Foundation and Contributors | MIT |
| Tailwind CSS | Tailwind Labs, Inc. | MIT |
| Axios | Matt Zabriskie and contributors | MIT |
| Lucide | Lucide Contributors | ISC |
| Component | Copyright / source | License |
|---|---|---|
| SimConnect client library | Microsoft Corporation | MSFS SDK EULA |
| MSFS Avionics Framework (msfs-sdk, msfs-efb-api) | Microsoft Corporation | MIT |
| resize-observer-polyfill | Denis Rul | MIT |
| typescript-memoize | Darryl Hodgins | MIT |
| Component | Copyright / source | License |
|---|---|---|
| OurAirports | OurAirports contributors | Public domain |
| FAA NASR (28-day subscription) | U.S. Federal Aviation Administration | U.S. Government work |
| Wikipedia | Wikipedia contributors | CC BY-SA 4.0 |
| OpenStreetMap | OpenStreetMap contributors | ODbL-1.0 |
The desktop interface also bundles the following open-source packages, each © its respective authors:
Components bundled with the SkyMate Control desktop application or downloaded by it at first launch.
Built with Llama. Llama 3.2 is licensed under the Llama 3.2 Community License, Copyright © Meta Platforms, Inc. All Rights Reserved. Use of the model is also subject to the Llama 3.2 Acceptable Use Policy.
eSpeak NG (GPLv3). SkyMate Control bundles unmodified eSpeak NG 1.51 binaries and runs them as a separate process for phonemization. The complete corresponding source code is available at https://github.com/espeak-ng/espeak-ng/releases/tag/1.51.
Voice models. Piper voice models are used unmodified, as packaged by the Piper project (rhasspy/piper-voices). Models built from CC BY and CC BY-SA datasets are credited below as those licenses require. No endorsement by the licensors is implied.
OpenFlights data (ODbL). Airline callsign and regional airline data are derived from the OpenFlights database, © OpenFlights.org contributors. The derived databases are made available under the Open Database License 1.0 and ship with the application as plain CSV and JSON files.
Training data. SkyMate Control speech and language models are trained on the ATCOSIM corpus and on synthetic data authored by SkyMate. No simulator data is used for training.
NVIDIA CUDA runtime. These libraries are not distributed by SkyMate. On computers with an NVIDIA GPU they are downloaded at first launch directly from NVIDIA and are governed by the NVIDIA CUDA Toolkit End User License Agreement.
SimConnect. The SimConnect client library is part of the Microsoft Flight Simulator SDK and is redistributed under the SDK license terms for use by add-ons.
Full license texts. The complete text of every license and notice listed here is included in the LICENSES folder of each SkyMate Control installation and referenced from Settings > About.
| Component | Copyright / source | License |
|---|---|---|
| Llama 3.2 | Meta Platforms, Inc. | Llama 3.2 Community License |
| LLamaSharp | SciSharp STACK | MIT |
| llama.cpp | The ggml authors | MIT |
| Whisper | OpenAI | MIT |
| whisper.cpp | The ggml authors | MIT |
| Whisper.net | Sandro Hanea | MIT |
| Silero VAD | Silero Team | MIT |
| ONNX Runtime | Microsoft Corporation | MIT |
| OpenVINO Runtime | Intel Corporation | Apache-2.0 |
| oneTBB | Intel Corporation | Apache-2.0 |
| Vulkan Loader | The Khronos Group Inc. | Apache-2.0 |
| NVIDIA CUDA runtime (cudart, cuBLAS) | NVIDIA Corporation | NVIDIA CUDA Toolkit EULA |
| Component | Copyright / source | License |
|---|---|---|
| ATCOSIM Air Traffic Control Simulation Speech Corpus | EUROCONTROL Experimental Centre and Graz University of Technology | ATCOSIM license |
| Component | Copyright / source | License |
|---|---|---|
| en_US-libritts_r, en_US-libritts | LibriTTS / LibriTTS-R and LibriVox contributors | CC BY 4.0 |
| en_GB-vctk | The University of Edinburgh (CSTR VCTK Corpus) | CC BY 4.0 |
| en_GB-aru, en_GB-alba | Dataset contributors, per the Piper model cards | CC BY 4.0 |
| en_GB-northern_english_male, en_GB-southern_english_female | Dataset contributors, per the Piper model cards | CC BY-SA 4.0 |
| en_GB-jenny_dioco | Jenny (Dioco) | Jenny TTS dataset license |
| en_US-arctic | Carnegie Mellon University (CMU ARCTIC) | CMU ARCTIC license |
| en_US-sam | Dataset contributors, per the Piper model card | Apache-2.0 |
| en_US-bryce, joe, john, kathleen, kristin, ljspeech, norman, reza_ibrahim; en_GB-cori | Dataset contributors, per the Piper model cards | CC0-1.0 |
| Component | Copyright / source | License |
|---|---|---|
| .NET Runtime & ASP.NET Core | .NET Foundation and Contributors | MIT |
| Entity Framework Core | .NET Foundation and Contributors | MIT |
| SQLitePCLRaw | SourceGear, LLC | Apache-2.0 |
| SQLite | SQLite authors | Public domain |
| Serilog | Serilog Contributors | Apache-2.0 |
| CsvHelper | Josh Close | MS-PL / Apache-2.0 |
| NAudio | Mark Heath & Contributors | MIT |
| CTrue.FsConnect | C-True | MIT |
| Component | Copyright / source | License |
|---|---|---|
| Electron | OpenJS Foundation and Electron contributors | MIT |
| Chromium | The Chromium Authors | BSD-3-Clause and others |
| React | Meta Platforms, Inc. and affiliates | MIT |
| React Router | Remix Software Inc. | MIT |
| SignalR JavaScript client | .NET Foundation and Contributors | MIT |
| Tailwind CSS | Tailwind Labs, Inc. | MIT |
| Zustand | Paul Henschel | MIT |
| Component | Copyright / source | License |
|---|---|---|
| SimConnect client library | Microsoft Corporation | MSFS SDK EULA |
| Microsoft Visual C++ Redistributable | Microsoft Corporation | Microsoft redistribution terms |
| Component | Copyright / source | License |
|---|---|---|
| OpenFlights | OpenFlights.org contributors | ODbL-1.0 |
| OurAirports | OurAirports contributors | CC0 / Public domain |
| FAA aircraft operator designators | U.S. Federal Aviation Administration | U.S. Government work |
| Wikipedia (factual designator supplements) | Wikipedia contributors | CC BY-SA 4.0 |
The desktop interface also bundles the following open-source packages, each © its respective authors:
The standard licenses named on this page can be read in full at the following locations:
Microsoft Flight Simulator and SimConnect are trademarks of Microsoft Corporation. X-Plane is a trademark of Laminar Research. NVIDIA and CUDA are trademarks of NVIDIA Corporation. Llama is a trademark of Meta Platforms, Inc. All other names are the property of their respective owners. SkyMate is not affiliated with, endorsed by, or sponsored by any of them.
If you believe a component is missing or credited incorrectly, or you need a copy of a license text or source code offered above, please contact us.