# Third-party notices — Into the Void

Into the Void (web app and plug-in) © Symvolia. It includes or links the components below, each under its own
licence. This file ships with the plug-in installers and is published at `/synth/THIRD_PARTY_NOTICES.txt`.

## Plug-in (VST3 / AU / CLAP / Standalone)

| Component | Version | Licence | Notes |
|---|---|---|---|
| JUCE | 9.0.4 | AGPLv3 **or** JUCE 9 EULA | Used under the JUCE 9 EULA (JUCE Starter, active on the Symvolia account since 30 Oct 2026). |
| VST 3 SDK (Steinberg), via JUCE | bundled with JUCE 9.0.4 | MIT (© 2025 Steinberg Media Technologies GmbH) | "VST" is a Steinberg trademark: logo use follows Steinberg's usage guidelines. |
| CLAP | via clap-juce-extensions | MIT | |
| clap-juce-extensions | commit 54b3c32 | MIT | |
| clap-helpers | submodule of the above | MIT | |
| Microsoft WebView2 SDK (Windows, static loader) | NuGet | Microsoft WebView2 SDK licence (redistributable) | |
| React, ReactDOM (embedded in the editor page) | 18.2.0 | MIT | |
| Barlow, Barlow Semi Condensed, Michroma, JetBrains Mono (embedded fonts) | @fontsource | SIL Open Font License 1.1 | |

## Web app (`/synth`) and site

| Component | Licence |
|---|---|
| React, ReactDOM 18.2.0 (cdnjs) | MIT |
| Next.js 15 | MIT |
| Auth.js (next-auth 5 beta), @auth/neon-adapter | ISC |
| @neondatabase/serverless | MIT |
| @vercel/blob | Apache-2.0 |
| Barlow, Barlow Semi Condensed, Michroma, JetBrains Mono (Google Fonts) | SIL Open Font License 1.1 |

## Algorithms and data

- HRTF: parametric spherical-head model after Brown & Duda (1998), implemented from the paper. No measured HRTF
  dataset is bundled. Future SOFA support will load files supplied by the user; their licences travel with them.
- Loudness meter: ITU-R BS.1770-4 / EBU R128, implemented from the public specifications.
- Factory presets, wavetables and samples: original work by Symvolia.

## Licence texts

- MIT, ISC, Apache-2.0, SIL OFL 1.1: full texts at https://opensource.org/licenses and https://openfontlicense.org,
  and in `core/web/vendor/LICENSES.txt` for the components embedded in the plug-in page.
- JUCE: https://juce.com/legal/juce-9-licence/

## Before selling (checklist, not legal advice)

1. **JUCE**: licensed under the JUCE 9 EULA, Starter tier (free below the Starter revenue limit). Track the plug-in's
   revenue over rolling 12 months and move to Indie before crossing the limit. Keep the account screenshot and the
   dated EULA PDF as proof of licence.
2. **VST 3**: the SDK bundled with JUCE 9.0.4 is MIT-licensed, so no separate Steinberg agreement is needed. Use the
   VST logo only per Steinberg's guidelines.
3. **AU**: no separate licence; ship it signed and notarized.
4. **AAX** (not built today): needs an Avid developer account and PACE/iLok signing.