Open Source and Third-Party Notices
Last updated 11 October 2026
About these notices
Streamling includes open-source software and other third-party material, each under its own licence. This document summarises them. Nothing in the Streamling Terms of Service or End User License Agreement limits your rights under an open-source licence; where they conflict, the open-source licence applies to that component.
The full list for each release
Every Streamling release includes a complete, automatically generated list of the open-source packages it contains, with each package's name, version, licence and source, in the file OPEN_SOURCE_NOTICES.txt in the app's install folder. The same list is published at https://streamling.app/open-source. It covers the app's JavaScript packages and Rust crates, and is regenerated for every release from the exact versions shipped.
Main open-source components
| Component | Licence | Used for |
|---|---|---|
| Tauri and related Rust crates | MIT or Apache-2.0 | The desktop app framework |
| React | MIT | The app's interface |
| three.js | MIT | 3D rendering |
| @pixiv/three-vrm | MIT | Showing and animating VRM characters |
| ONNX Runtime (through the ort crate) | MIT (ort: MIT or Apache-2.0) | Running the voice model on your PC |
| Socket.IO client | MIT | Connecting to Streamlabs |
| Microsoft Edge WebView2 Runtime | Microsoft software licence terms | Displaying the app (provided by Microsoft with Windows) |
Hundreds of smaller packages are listed in the full notices described in section 2.
Fonts
| Fonts | Licence |
|---|---|
| Space Grotesk, Barlow, Caveat, Fredoka, Bangers, Bebas Neue, Orbitron, Righteous, Press Start 2P | SIL Open Font License 1.1 |
| Permanent Marker | Apache License 2.0 |
The fonts are bundled through the Fontsource packages. The full licence texts are included in the complete notices.
Optional voice pack
The voice pack is not part of the installer. It is downloaded only when you choose to install it, directly from the public releases of these projects, and is used under their licences:
| Component | Licence | Notes |
|---|---|---|
| Kokoro-82M voice model and voices (hexgrad) | Apache License 2.0 | Model files packaged by the kokoro-onnx project (MIT) |
| eSpeak NG 1.52.0 | GNU General Public License v3.0 | Runs as a separate program to turn text into pronunciation; it is not built into Streamling |
The source code of eSpeak NG is available at https://github.com/espeak-ng/espeak-ng, and the voice pack folder on your PC contains its licence.
Other third-party content
- Character models and outfits: created with VRoid Studio by pixiv Inc., whose terms allow characters made with it to be used commercially.
- Animations: from Adobe Mixamo, used under Adobe's terms, which allow them in commercial software such as games but not as standalone files; and from ActionForge (https://actionforge.app), whose animations were made by Quaternius and dedicated to the public domain under CC0 1.0. They were converted to the VRM animation format for Streamling. The Mixamo animations are licensed for use inside Streamling only and may not be extracted or redistributed.
- Sound effects: generated with ElevenLabs under a paid Starter plan, which includes a commercial licence.
- Streamling name, logo, Pals and artwork: owned by DevNome (Pvt) Ltd.
Trademarks
Twitch, YouTube, Google, Kick, Streamlabs, OBS, Discord, Paddle, GitHub, VRoid and other names are trademarks of their owners. Their use does not mean they are affiliated with or endorse Streamling.
Source code and questions
Where a licence requires us to provide source code or other information, contact info@devnome.com and we will do so as that licence requires.
Full package list
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