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VoiceStudio — License Notice

Abbreviation

AGPL-3.0-only

Notice

Copyright 2024-present Palash Debnath and VoiceStudio contributors.

VoiceStudio is free and open-source software, licensed under the GNU Affero General Public License, Version 3 (AGPL-3.0). You are free to use, copy, modify, and redistribute it. That includes commercial and internal business use of the application itself. Model weights, tokenizers, and other third-party assets retain their own terms; this application license does not grant or summarize rights under those separate terms.

Because this is the Affero GPL, one additional obligation applies: if you modify VoiceStudio and make that modified version available to others over a network, you must also offer those users the complete corresponding source code of your modified version under these same AGPL-3.0 terms. See the full text in LICENSE.

A commercial license is available for organizations that want to embed VoiceStudio in a closed-source or proprietary product or service without the AGPL-3.0 copyleft obligations. Pricing tiers are coming soon; for inquiries contact VoiceStudio@palash.dev.

(This Notice is a plain-language summary; the binding terms are the full GNU AGPL-3.0 text in LICENSE.)

Scope

These terms cover the VoiceStudio application — the Tauri desktop shell (frontend/src-tauri/), the React frontend (frontend/src/), the FastAPI backend (backend/), and supporting build / packaging scripts (scripts/, Dockerfile, docker-compose.yml, .github/).

The bundled omnivoice/ Python package — the underlying TTS model by Han Zhu — is separately licensed under Apache License 2.0 by its upstream authors and is not relicensed here. Apache License 2.0 is compatible with, and may be combined under, the GNU AGPL-3.0. See pyproject.toml.

Downloaded model weights are not relicensed by VoiceStudio. The default k2-fsa/OmniVoice model card identifies its code as Apache-2.0 and pretrained weights as CC-BY-NC. Its audio_tokenizer/LICENSE contains separate Boson Higgs Audio 2 and Meta Llama community terms. A commercial license for VoiceStudio-owned code does not replace any of those terms.

Third-party dependencies retain their own licenses. See Cargo.lock, bun.lock, and uv.lock for the resolved set.

Reference

The full canonical text of the GNU Affero General Public License, Version 3 is reproduced verbatim in LICENSE. The authoritative copy lives at https://www.gnu.org/licenses/agpl-3.0.txt.

Why this notice is a separate file: LICENSE must contain the verbatim AGPL-3.0 text and nothing else, so GitHub's license detection (and the corporate license scanners that gate adoption) can identify it as AGPL-3.0-only rather than falling back to "Other" / NOASSERTION.