Third-Party Licenses
VoxAI is proprietary software (© Sprout Labs, all rights reserved). It bundles and builds upon the open-source components listed below. This file covers what we actually distribute; models and tools that users download or install themselves are listed separately at the end.
The macOS app itself uses only Apple system frameworks (SwiftUI, AVFoundation, Speech, ScreenCaptureKit) — no third-party Swift dependencies.
Special notices
Python runtime — the embedded MCP server ships a CPython 3.13 runtime (PSF License 2.0), packaged with PyInstaller. The PyInstaller bootloader is GPL-2.0-with-exception, which explicitly permits distributing bundled applications under any license; PyInstaller itself is a build tool and is not shipped.
edge-tts (LGPL-3.0) — shipped as a separate helper executable
(voxsage-edge-tts) that the server invokes strictly via subprocess; it is
not linked into or imported by our code, so the application is not a
derivative work. Full license text: licenses/edge-tts-LGPL-3.0.txt.
Users may substitute their own build of the component by setting the
VOXSAGE_EDGE_TTS environment variable to an alternative executable.
(Release checklist: LGPL-3.0 supplements GPL-3.0 — include the GPL-3.0 base
text alongside when producing the distributable DMG.)
certifi (MPL-2.0) — distributed unmodified; MPL obligations are satisfied by this notice and the unmodified inclusion.
caio — package metadata carries no license field; the upstream repository (github.com/mosquito/caio) is Apache-2.0.
Bundled Python packages (embedded MCP server)
Inventory of the minimal build environment from which the server binary is
produced (regenerate with the snippet in packaging/, or via
packaging/venv-build/bin/pip list):
| Package | Version | License |
|---|---|---|
| aiofile | 3.11.1 | Apache-2.0 |
| aiohappyeyeballs | 2.7.1 | PSF-2.0 |
| aiohttp | 3.14.1 | Apache-2.0 AND MIT |
| aiosignal | 1.4.0 | Apache-2.0 |
| annotated-types | 0.7.0 | MIT |
| anyio | 4.14.1 | MIT |
| attrs | 26.1.0 | MIT |
| Authlib | 1.7.2 | BSD-3-Clause |
| beartype | 0.22.9 | MIT |
| cachetools | 7.1.4 | MIT |
| caio | 0.9.25 | Apache-2.0 (per upstream repo) |
| certifi | 2026.6.17 | MPL-2.0 |
| cffi | 2.1.0 | MIT-0 |
| click | 8.4.2 | BSD-3-Clause |
| cryptography | 49.0.0 | Apache-2.0 OR BSD-3-Clause |
| cyclopts | 4.21.0 | Apache-2.0 |
| dnspython | 2.8.0 | ISC |
| docstring_parser | 0.18.0 | MIT |
| edge-tts | 7.2.8 | LGPL-3.0 (see special notice) |
| email-validator | 2.3.0 | Unlicense |
| exceptiongroup | 1.3.1 | MIT |
| fastmcp | 3.1.1 | Apache-2.0 |
| frozenlist | 1.8.0 | Apache-2.0 |
| h11 | 0.16.0 | MIT |
| httpcore | 1.0.9 | BSD-3-Clause |
| httpx | 0.28.1 | BSD-3-Clause |
| httpx-sse | 0.4.3 | MIT |
| idna | 3.18 | BSD-3-Clause |
| jaraco.classes | 3.4.0 | MIT |
| jaraco.context | 6.1.2 | MIT |
| jaraco.functools | 4.5.0 | MIT |
| joserfc | 1.7.3 | BSD-3-Clause |
| jsonref | 1.1.0 | MIT |
| jsonschema | 4.26.0 | MIT |
| jsonschema-path | 0.5.0 | Apache-2.0 |
| jsonschema-specifications | 2025.9.1 | MIT |
| keyring | 25.7.0 | MIT |
| markdown-it-py | 4.2.0 | MIT |
| mcp | 1.28.1 | MIT |
| mdurl | 0.1.2 | MIT |
| more-itertools | 11.1.0 | MIT |
| multidict | 6.7.1 | Apache-2.0 |
| openapi-pydantic | 0.5.1 | MIT |
| opentelemetry-api | 1.43.0 | Apache-2.0 |
| pathable | 0.6.0 | Apache-2.0 |
| platformdirs | 4.10.0 | MIT |
| propcache | 0.5.2 | Apache-2.0 |
| py-key-value-aio | 0.4.5 | Apache-2.0 |
| pycparser | 3.0 | BSD-3-Clause |
| pydantic | 2.13.4 | MIT |
| pydantic-settings | 2.14.2 | MIT |
| pydantic_core | 2.46.4 | MIT |
| Pygments | 2.20.0 | BSD-2-Clause |
| PyJWT | 2.13.0 | MIT |
| pyperclip | 1.11.0 | BSD |
| python-dotenv | 1.2.2 | BSD-3-Clause |
| python-multipart | 0.0.32 | Apache-2.0 |
| PyYAML | 6.0.3 | MIT |
| referencing | 0.37.0 | MIT |
| rich | 15.0.0 | MIT |
| rich-rst | 2.1.0 | MIT |
| rpds-py | 2026.6.3 | MIT |
| sse-starlette | 3.4.5 | BSD-3-Clause |
| starlette | 1.3.1 | BSD-3-Clause |
| tabulate | 0.10.0 | MIT |
| typing-inspection | 0.4.2 | MIT |
| typing_extensions | 4.16.0 | PSF-2.0 |
| uncalled-for | 0.3.2 | MIT |
| uvicorn | 0.51.0 | BSD-3-Clause |
| watchfiles | 1.2.0 | MIT |
| websockets | 16.1 | BSD-3-Clause |
| yarl | 1.24.2 | Apache-2.0 |
Not distributed with the app
These are downloaded by the user at runtime or installed only in a development environment. Listed for completeness and attribution:
Models (runtime download, user-initiated):
pyannote/speaker-diarization-community-1— CC-BY-4.0, gated: the user accepts terms and downloads with their own Hugging Face token; VoxAI never redistributes the model. Attribution: speaker diarization powered by pyannote.audio (Hervé Bredin et al.). Keep this attribution in product credits.whisper-large-v3-turbo(MIT, OpenAI) — via mlx-whisperQwen3-TTS-0.6B(Apache-2.0, Alibaba) — local TTS optionct-puncpunctuation model (FunASR/ModelScope) — cloud-refine post-processing, downloaded on first usesilero-vad(MIT)
Development-environment packages (source builds only, not in the app): whisperx (BSD-2), mlx-whisper (MIT), mlx-audio (MIT), pyannote.audio code (MIT), chatterbox-tts (MIT), opencc-python-reimplemented (Apache-2.0), funasr_onnx (MIT), soundfile (BSD-3), and their dependencies.
Cloud services (opt-in, no code distributed): AssemblyAI (commercial API, user’s own key); Microsoft Edge neural voices via edge-tts (see special notice above regarding its unofficial status).